Watch short videos based on our recent works

Development of 5G mmwave frontend modules

Our entry at the 5G Hackathon by Dept of Telecomm. Govt of India

Modulation using Reconfigurable Metasurface  

BIOGRAPHY   Back to TOP

Academics

·       Ph.D. Pennsylvania State University, USA

·       M.Tech. Cochin University of Science and Technology, Kochi

·       B.Tech. College of Engineering, Trivandrum

Positions Held

Chairperson, Office of Development and Alumni Affairs, IISc, Aug. 2023 -

Professor , Electrical Communication Engineering, IISc, June 2015 -

§  Chairperson, Electrical Communication Engineering, IISc, Aug. 2020 -2023

§  Chairperson, Centre for Scientific & Industrial Consultancy (CSIC), IISc (2017 -2022)

§  Convener, Office of Career Counselling and Placement (OCCaP), IISc (2016 -2022)

§  Associate Professor, Electrical Communication Engineering, IISc, Sept. 2009 -  2015

§  Assistant Professor, Electrical Communication Engineering, IISc, Sept. 2003 - Sept 2009 

§  Post Doctoral Researcher, Pennsylvania State University, USA, Sept. 2002 - Aug. 2003
Research Assistant, Pennsylvania State University, USA, Jan. 1999 - Aug. 2002

§  Scientist, National Aerospace Laboratories, Bangalore, Oct. 1996 - Dec. 1998
JRF/SRF, National Aerospace Laboratories, Bangalore, Feb. 1995 - Sept. 1996
Post Graduate Trainee National Aerospace Laboratories, Bangalore, Feb. 1994 - Feb. 1995

§  M.Tech Student Trainee, Electronics and Radar Development Establishment (LRDE), Bangalore, Dec. 1992 - May 1993

PROFESSIONAL WORK  Back to TOP

Professional Societies

·       Member, Executive Committee, IEEE Microwaves, Antennas and Propagation Conference MAPCon (2022-)

·       Member, Executive Committee, IEEE MTTS International Microwaves & RF Conference (2013-2021)

·       President, Institute of Smart Structures and Systems (ISSS) (2017- 2019); Previsouly as Vice President 2015-2017, Treasurer 2009-2013, Secretary 2013-2015)

·       Founding Chairman, Bangalore Chapter of IEEE Microwave Theory & Techniques (MTT) and Antennas & Propagation (AP) (2009-2012)

·       Member, Executive Committee of Bangalore Section of IEEE (2005-2008) 

·       President, Faculty Association, IISc (2015-2017)

Professional Recognition

·       Fellow of Indian National Academy of Engineering (elected 2011)

·       Series Editor, Springer Briefs in Computational Electromagnetics 2017-

·       Senior Associate Editor, Sadhana, Proceedings of the Indian Academy of Sciences 2020-

·       Member, Editorial Board, the Journal of the Indian Institute of Science 2008-2018

·       Member, Research Council, Kerala State Council for Science Technology & Environment (2015-2019)

·       Member, Editorial Board, Int. J. RF & Microwave Computer Aided Engineering (Wiley) 2010-2018

·       Member,, Editorial Board, Journal of the Institute of Smart Structures & Systems 2012-2015

·       Member,, Editorial Board, Smart Nanosystems in Engineering and Medicine

·       Area Editor, Int. J. Electronics & Communications (Elsevier) 2010-2016

·       Member, Technical Advisory Board of International Symposium on Antennas and Propagation 2006-2009.

·       Member, Academic Council RV College of Engineering, Bangalore 2013-2016

·       Member, Board of Studies Defense Institute of Advanced Studies, Pune, 2012- 2014

·       Member, Board of Studies for Undergraduate Course, Electronics & Communication Engineering Dept, MSRIT, Bangalore 2008-2015

TEACHING  Back to TOP

·       E8-242 Radio Frequency Integrated Circuits & Systems (Offered every year during Jan-Apr. Semester: 2008 onwards)

·       E8-202 Computational electromagnetics (Offered jointly with Dr Dipanjan Gope during Aug-Dec Semester: 2012 onwards)

·       NPTEL Course on Micro and Smart Systems You may view/download videos from youtube

·       E8 211 Antenna Theory and Practice (Jan.-Apr. 2004) discontinued

·       E8 241 Microwave Engineering & RF MEMS (Aug.-Dec. 2004, '05, '06, '07) discontinued

·       E8-242 Microwave Systems Engineering (Jan-Apr. 2005, '06, '07) Modified

·       E8-311 Advanced Topics in Electromagnetics (Aug-Dec 2010, '11)

·       E8-203 RF & Optical Engineering (with Prof T Srinivas; Aug-Dec Semester: 2015) 

RESEARCH  Back to TOP

Recent Research Highlights

Our group has designed and characterized a 64 element phased array antenna for active beam steering with the necessary hardware and software for a millimeterwave band. Special beam shaping and beam steering approaches have been developed to reduce the impact of quantization. Control and power circuits for the array has also been developed. Our computational EM capabilities have been enhanced to incorporate geometric uncertainty in addition to spatial variation of permittivity for EM problems solved using FEM and time domain radial point interpolation method (RPIM). Another recent highlight has been the use of 2D periodic transmitarray for a channel modulation scheme. This hardware has potential use in 6G communications and advanced microwave imaging. Another topic of research is on re-entrant coaxial cavity resonators for various sensing applications.

Ongoing Research Topics  Back to TOP

Antenna Arrays & Beam Steering: Conformal antenna arrays of moderate size are of commercial interest due to the advances in mm wave 5G antenna systems. We focus on new approaches of optimally designing these arrays, and their deployment using practical antenna elements. We have recently demonstrated beam steering array at 28GHz and were able to stream videos through a link established. An innovative product idea in this direction is being investigated by our team.

Current Students:   Past MTech (Res) students: Ajay Kochar, Vaibhav Monga

Microwave Antennas: We have developed a wideband microstrip patch antenna with about 50% bandwidth and good gain. Other multifunctional antennas developed included dual band and triband antennas using various microstrip patch geometries. We also investigated several fractal geometries for realizing small and multi-frequency antennas. We have also developed antennas for several industrial/commercial applications.

Another topic of interest is the use of periodic structures such as metamaterials for antenna applications. A reconfigurable intelligent surface was developed and its use in media based modulation is being explored.

Current PhD Students: Gauranga Dhauntia, Aritra Roy, Priya Suresh Past Students: Veeresh GK, Subhrakanta Behera, Vijayashree Bhat, MN Sujatha

Microwave Resonators: Compact microwave resonators with a high quality factor are useful in a a variety of applications from microwave filters to a variety of sensors to quantum technology. We have investigated re-entrant cavities and analyzed the impact of various geometric parameters on the quality factor and sensitivity.

Current PhD Students: Malika Somanath, Nagendra NN; Past Students: Piyush Sinha, Ashok Bansiwal

Computational Electromagnetics: Fabrication tolerance is a major hurdle in device fabrication. We focus on the application of stochastic finite element methods in electromagnetics problems. We are also working on time domain electromagnetic solvers specifically for analyzing transient electromagnetic effects involving multi-physics challenges.

Current PhD Students: Athul Shaji, Kiran R, Abhijith BN,   Past students: Gladwin Jos KT, Aditya Sripada Sivaram, Hementh G, Neeraj Kumar Singh

Other Research Topics  Back to TOP

Wireless Power Transfer:  We have developed antennas and circuits for harvesting RF energy.  We have demonstrated that it is possible to build a low power communication terminal operating on such harvested energy.  Several extensions of this work is underway.  Wireless power transfer becomes a possibility in select environments.  The challenge is to enhance the power transfer efficiency.  We have  recently developed antennas for wireless power transfer in a fuel tank to energize wireless fuel sensors.

Microwave Circuits:  We have developed novel ideas on miniaturizing passive components such as filters, phase shifters and resonators. PCBs and LTCC techniques have been used for their experimental prototypes. Modeling approaches have been studied for several microwave components. Our recent emphasis is on compact circuits for wideband systems.

Past PhD Students: D. Packiaraj, M. Sumathy, Keerthan P.

Micro and Nano Technology Applications:  Micromachining techniques are fast becoming the mainstay of millimeter and sub-millimeter wave systems for wireless, military, aerospace and sensor applications. We have established sophisticated RF and microwave modeling capabilities for the analysis, design and characterization of these systems. IISc already has a state of the art facility for their fabrication.  We have demonstrated low-actuation voltage switches for RF applications.    In addition, we have collaborated extensively with space and defense research groups for the fabrication of such devices. 

Our emphasis was on low cost fabrication of compact devices for microwave and millimeterwave applications.  We have recently developed a low cost fabrication approach for RF MEMS phase shifters for phased array applications. We are also exploring compact RF cavities for sensing applications.

Past PhD Students: Poonam Lata, Sudhanshu Shekar, Arjun Shetty,

Ongoing Research Projects  Back to TOP

·       Communication Scheme for a Scatter-rich Channel using Digitally Controlled Metasurface [2022-2023]

·       Coupled Electromagnetic Device Circuit Modeling for High Power Microwave Effects (MTRDC/DRDO) [2019-2023]

Ongoing Consulting Projects

 

Past Research Projects  Back to TOP

5G/mm wave Gatelink Antenna (Boeing Corporation) [2018-2022]

Indigenous 5G Test Testbed Set up (mm wave beam steering array) (Dept of Telecom., Govt of India) [2018-2021]

Telemetry System for Nano Satellites (ISRO) 2018-19

Wideband Waveform Generation for Radar Applications (DRDO) 2015-2018

Development of Ku-band Power Amplifier Module (DRDO) 2016-17

Indian Nanoelectronics Users Program (INUP) (MCIT, New Delhi) [Co-investigator]

Feasibility Studies to Reduce Wiring Requirements of Telemetry During Flight Tests (ADA) 2015-2016 [PI]

Design of Energy Harvesting Antennas for Fuel Sensors, (Boeing ANRC), 2013-2015

Upgrading facilities for MEMS Design Activities at National Resource Centres (NPMASS/ADA, Bangalore) [PI]

Group IIIA(Ga, Al, In)-Nitrides on Si: Growth, transport properties and device development (DRDO, New Delhi) [Co-investigator]

Enhancement of Design tools at National MEMS Design/Resource Centres  (NPMASS/ADA, Bangalore) [PI]

Center of Excellence in Nanoelectronics (MCIT New Delhi)

Centre for Analog and Mixed Signal Integrated Circuits (MCIT New Delhi) [Co-investigator]

Microwave Power handling of Micromachined Systems (UGC, New Delhi) [Co-investigator]

Multi-frequency Wireless Antennas for on-board Applications (Boeing Corp., USA) Jan 2008-2011

EM Analysis of Integration and Packaging issues with RF MEMS Switches (IISc STC) Apr 2009-2012

Design and Development Studies for RF MEMS Switches (IISc STC) Apr 2006-Mar 2009

Design and Development of Fractal Shaped Antennas for 1-18GHz Operation ( DLRL, Hyderabad) Oct 2006-Mar 2008

Design Study for an SPDT RF MEMS Switch (RCI, Hyderabad) May 2007-July 2008

Investigations for Design Rules of Multi-Band Antennas Using Fractal Geometries (DST, New Delhi) April 2004-April 2007

Design Optimization of a Micromachined Phase shifter for Phased Array Applications (ISRO-STC, IISc) April 2005-March 2007

Enabling MEMS Education and Research in selected colleges through design and development projects (Co-investigator) (NPSM) Sept 2005-July 2006

An Exploratory Study on Micromachined Microstrip Patch Antennas on Semiconductor Substrates (ISRO-STC, IISc) April 2004-March 2006

PUBLICATIONS  Back to TOP

Books

Patents

Journals

Conference/Symposia

Technical Reports

Back to TOP

Books 

K.J. Vinoy, G.K. Ananthasuresh, Rudra Pratap, and SB Krupanidhi, (Editors) Micro and Smart Devices and Systems.  Springer [New Delhi, ISBN: 978-81-322-1912-5, 506 p.] [K.J. Vinoy and T.V. Prabhakar, A Universal Energy Harvesting Scheme for Operating Low-Power Wireless Sensor Nodes Using Multiple Energy Resources, pp. 453-466].

G.K. Ananthasuresh, K.J. Vinoy, S. Gopalakrishnan, K.N. Bhat and V.K. Aatre, Micro and Smart Systems.  John Wiley & Co.[Indian Edition New Delhi, ISBN: 978 81265 27151, 2010, 385p.] [Enhanced International Edition: New York, ISBN: 978-0470919392, 2011, 600p].

V.K. Varadan, K.J. Vinoy and S. Gopalakrishnan, Smart Materials Systems & MEMS: Design and Development Methodologies. London: John Wiley. 432 p., [Int. Ed. ISBN 978 04700 93610 - 2006]. [Indian Reprint ISBN 978 81265 31707, 2011]

V.K. Varadan, K.J. Vinoy, and K.A. Jose, RF MEMS and their Applications. London: John Wiley, 406p., [Int. Ed. ISBN 978 04708 43086- 2002] Indian Reprint: ISBN 978 81265 29919, 2010].

K.J. Vinoy and R.M. Jha, Radar Absorbing Materials: From theory to design and characterization, Boston: Kluwer Academic, 190 p., [Int. Ed. ISBN 978-0792397533 - 1996].

Patents  Back to TOP

K.J. Vinoy, A Chockalingam, Aritra Roy, Ashwin P, Naresh Y, Venkataramana A., Saurav Roy, A Digitally Reconfigurable Metasurface for Communication in Scatter-rich Multipath Channel, Provisional Application Filed 202141039005, (TEMP/E-1/ 43859/ 2021-CHE) (25.08.2021).

Ashok Bansiwal, Sushil Raina, K.J. Vinoy, S.K. Datta,  A Re-entrant Cavity structure for Broadband Klystron Tube, Indian Patent Filed. Patent filed TEMP/E-1/15465/2019-DEL, Apr 11, 2019.

Ashok Bansiwal, Sushil Raina, K.J. Vinoy, S.K. Datta,A Ridge Loaded Re-entrant Cavity Structure for Multiple beam Klystron Tube, Indian Patent filed, TEMP/E-1/38059/2018-DEL

R Sai, SA Shivashankar, Navakanta Bhat, and K.J. Vinoy, High-frequency integrated device with an enhanced inductance and a process thereof, US Patent 9,741,656

SA Shivashankar, Ranajit Sai, Navakanta Bhat, and K.J. Vinoy, Nanostructures Materials and Process for their deposition on a substrate, Indian Patent Filed 4570/CHE/2012

Murugan Sumathy, K.J. Vinoy, Subrata Kumar Datta and Lalit Kumar, A Damond shaped Cross section Folded-Waveguide Slow wave Structure, Indian Patent Filed (2011) No.: 1930/DEL/2011

V.K. Varadan, K.J. Vinoy, J.A. Kollakompil, and V.V. Varadan, Miniaturized conformal wideband fractal antennas on high dielectric substrates and chiral layers, US Patent no. 6,525,691, Feb. 25, 2003.

Journals  Back to TOP

Copyright and all rights therein of the works listed here are retained by authors and/or by other copyright holders.  These works may not be reposted/published/copied without the explicit permission of the copyright holders.  Those copying full-text publications from the links below are expected to adhere to the terms and constraints of relevant copyright regulations.  

2023

110. R. Kiran and KJ. Vinoy, A Reduced Order PCE based Time Domain Method for Large Uncertainties,” IEEE Trans. Antennas & Propagation.

109. Gladwin Jos K.T. and K.J. Vinoy, An efficient SSFEM-POD method for wideband uncertainty quantification of material parameter, IEEE Trans. Antennas & propagation, vol 71, no 2, pp. 1654 – 1661, Feb. 2023

108. A. Roy, KJ. Vinoy, S Mallegol, N. Martin, C. Quendo, Wideband Absorbing Metasurface for Improving Axial Ratio of a Compact Archimedean Spiral Antenna,” IEEE Trans. Antennas & Propagation, vol 71, no 1, pp, 151-158, Jan 2023

2022

107. G. Dhaundia and K.J. Vinoy, A high-gain wideband microstrip patch antenna with folded ground walls,” IEEE Antennas & Wireless Propagation Letters, 2022,

106. Aritra Roy, Yalagala Naresh, Ashwin Padmanabhan, A. Chockalingam, and K J Vinoy, Digitally reconfigurable metasurface array for a multipath based wireless link with media-based modulation,” IEEE Trans. Microw. Theo. Tech.,

105. K.T.J. Gladwin and K.J. Vinoy, Modelling of Spatial Permittivity Variations using Karhunen Loève Expansion for Stochastic Electromagnetic Problems,” Int, J. RF& Microwave Computer Aided Engineering (May, 2022)

104. A. Roy, KJ. Vinoy, S Mallegol, N. Martin, C. Quendo, Performance Improvement of An Archimedean Spiral Antenna for 2-18 GHz Applications,” IEEE Antenna Wireless Propagat Lett. April, 2022,

103. Gladwin Jos K.T. and K.J. Vinoy, Fast Solution of High Stochastic Dimensional EM Problems using Proper Orthogonal Decomposition, IEEE Microwave and Wireless Component Letters, vol 32, no. 6, pp. 483-486, 2022

2021

102. Kiran R and K.J. Vinoy, A stochastic radial point interpolation method for wideband uncertainty analysis, IEEE Antennas & Wireless propagation Letters, vol. 20, pp. 1755-1759, Sept 2021

101. Abhijith BN and K.J. Vinoy, A novel method for intrusive stochastic estimation of geometric tolerance effects in finite element electromagnetic analysis,  IEEE Trans. Microw. Theo. Tech. vol 69, No. 10, pp. 4329 – 4340, Oct 2021

100. P.J. Bora, K.K. Khanum, K.R. Riya K.J. Vinoy, and P.C. Ramamurthy, “Porous Fibres of Polymer Blend for Broadband Microwave Absorption,” Materials Advances, vol.2, pp. 3613-3619, 2021.

99. T.R. Suresh Kumar, K.J. Vinoy, “A Miniaturized Angularly Stable FSS for Shielding GSM 0.9, 1.8, and Wi-Fi 2.4 GHz Bands,” IEEE Transactions on Electromagnetic Compatibility, 2021,

98. Ashok Bansiwal, Sushil Raina, K J Vinoy, Subrata Kumar Datta, "Effect of Beam Tunnels on Resonant Frequency of Cylindrical Reentrant Cavity,” Defense Science Journal (India) Vol. 71 Issue 3, p332-336, 2021.

97. P. Sinha, Ch. V. N. Rao, K.J. Vinoy and R. Jyoti, “Re-entrant cavity accelerometer with high bias stability”, IEEE Sensors Journal, vol. 21, no. 4, pp. 4333-4331, Feb. 2021, doi: https://doi.org/10.1109/JSEN.2020.3032849

2020

96.  P. Sinha, K. J. Vinoy and Ch. V. N. Rao, “Analytical modelling and experimental studies on tapered post re-entrant cavity resonator,” IEEE Trans. Microw. Theory Tech., vol. 68, no. 12, pp. 5190-5199, Dec 2020

95.Ritesh Kumar and KJ Vinoy, "Large Group Delay in Microstrip Circuit using Coupled Open Stubs and Collocated Ground Slots," Accepted, IEEE Microwave and Wireless Component Letters, 2020

94.Aditya Sripada, KJ Vinoy, "Inverse Multiquadric Radial Basis Functions in Eigenvalue Analysis of a Circular Waveguide using Radial Point Interpolation Method," Accepted, IEEE Microwave and Wireless Component Letters, 2020

93.Ashok Bansiwal, Sushil Raina, K.J. Vinoy and Subrata Kumar Datta, "A Post-Loaded Rectangular Reentrant Cavity for Broadband Multiple-Beam Klystron," Accepted, IEEE Electron Device Letters, 2020

92. Gladwin Jos KT and K.J. Vinoy, Neumann Expansion based FEM for Uncertainty Quantification of Permittivity Variations, IEEE Antennas and Wireless Propagation Letters, Vol. 19, Issue:4, pp 561-565, April 2020,

91. Ashok Bansiwal, Sushil Raina, K.J. Vinoy, Subrata Kumar Datta, "Calculation of quality factor of a rectangular reentrant cavity," International Journal of Microwave and Optical Technology, Vol.15, No.1, pp 80-84, Jan 2020.

90. Rajiv Panigrahi, Joy Thomas M, and K.J. Vinoy, “A new Fabrication Method for Serpentine Folded Waveguide Slow Wave Structure at W band”, IEEE Trans Electron Devices, vol. 67, no. 3, pp. 1198-1204, March 2020, 2020

89. Angappan M., Pritom J. Bora, K.J. Vinoy, Kishore, Praveen C. Ramamurthy, “Microwave Absorption Efficiency of Poly (vinyl-butyral)/Ultra-thin Nickel Coated Fly Ash Cenosphere Composite, Surfaces and Interfaces, 100430, 2020,

88. Ashok Bansiwal, Sushil Raina, K.J. Vinoy and Subrata Kumar Datta,”Analysis for Unloaded Quality Factor of a Rectangular Double-Reentrant Cavity with Circular Cylindrical Ferrule for Klystron using Wheeler’s Incremental Inductance Rule," Journal of Electromagnetic Waves and Applications, Vol. 34, No. 2, pp. 201–212, 2020.

2019

87.  P.J. Bora, A.G. Anil, K.J. Vinoy, and P.C. Ramamurthy, "Outstanding Absolute Electromagnetic Interference Shielding Effectiveness of Cross-Linked PEDOT:PSS film," Advanced Materials Interfaces, Volume 6, Issue 22, 1901353, 2019,

86. Gladwin Jos KT and K.J. Vinoy, "A fast polynomial chaos expansion for uncertainty quantification in stochastic electromagnetic problems," IEEE Antennas and Wireless Propagation Letters, vol. 18, issue 10, pp. 2120-2124, 2019.

85.  Ashok Bansiwal, Sushil Raina, K.J. Vinoy and Subrata Kumar Datta (2019), "Equivalent Circuit Analysis of a Rectangular Double-Reentrant Cavity with Circular Cylindrical Ferrule for Klystrons," IEEE Trans Electron Devices. vol. 66, issue 11, pp. 4952-4956, 2019

84. N. Abhijith and K.J. Vinoy, "Spectral Stochastic FEM for Uncertainty Quantification due to Multiple Dielectric variabilities," IEEE Antennas and Wireless Propagation Letters, vol 18, issue 10, pp. 1961-1965, 2019.

83. S. Shekhar and K.J. Vinoy, "Thermally Robust Thin-Metal Membrane Capacitive RF MEMS Switch", ISSS Journal of Micro and Smart Systems, vol. 8, issue 1, pp. 31-40, June 2019.

82.  Ashok Bansiwal, S. Raina, K. J. Vinoy and S.K.Datta, A Broadband Rectangular Reentrant Cavity for Multiple-Beam Klystron, IEEE Trans Electron Devices, vol 66, issue: 7, pp. 3168-3170, July 2019.

81.  Pritom J. Bora, S. Gupta, V.K. Pecharsky, K.J.Vinoy, P.C.Ramamurthy, R.L. Hadimani, Enhancement of microwave absorption bandwidth of polymer blend using ferromagnetic gadolinium silicide nanoparticles, Material Letters, Volume 252, 2019, pp 178-181, 2019.

80.  Ashok Bansiwal, S. Raina, K.J. Vinoy and Subrata Kumar Datta (2019), A simple method for estimating the quality factor of cylindrical re-entrant cavity of Klystrons, Journal of Electromagnetic Waves and Applications, vol. 33, issue: 8, pp. 1082-1091, 19 March 2019.

79.  Pritom J Bora, S M Harstad, S Gupta, V.K Pecharsky, KJ Vinoy, P.C Ramamurthy and R L Hadimani, Gadolinium silicide (Gd5Si4) nanoparticles for tuneable broad band microwave absorption, Materials Research Express, vol. 6 (2019) 055053, online 10 January 2019,

2018

78.  Neeraj Kumar , K.J. Vinoy, and S. Gopalakrishnan, " Improved Well-Conditioned Model Order Reduction Method Based on Multilevel Krylov Subspaces ," IEEE Microwave and Wireless Component Letters, 2018

77.   Ashok Bansiwal, Sushil Raina, K.J. Vinoy, S.K. Datta, " Calculation of Equivalent Circuit Parameters of a Rectangular Reentrant Cavity for Klystron ," Int J Microwave and Opt Technol., vol. 13, No 6, 487-492, Nov 2018.

76.  S. Shekhar, KJ Vinoy, and GK Anathasuresh, " Low-Voltage High-Reliability MEMS Switch for Millimeter Wave 5G Applications ," Journal of Micromechanics & Microengineering, 2018

75.  M. Angappan, Pritom J. Bora, K.J. Vinoy, Praveen C. Ramamurthy, K. Vijayaraju, " Tailorable electromagnetic interference shielding using nickel coated glass fabric-epoxy composite with excellent mechanical property ," Composites Communications, Vol 10, pp. 110-115, 2018

74.  Pritom J. Bora, Irthasa Azeem, K.J. Vinoy, Praveen C. Ramamurthy, and Giridhar Madras, " Polyvinylbutyral -Polyaniline Nanocomposite for High Microwave Absorption Efficiency ," ACS Omega, 3, 16542−16548, 2018

73.  Priya S. Nalumakkal, K. Maheshwara Reddy; K.J. Vinoy; Saurabh Shukla, " A wideband Stripline fed Tapered Slot Antenna with Integral Coupler for wide scan angle Active Phased Array ," IET Microwaves, Antennas & Propagation, Volume 12, Issue 9, p. 1487-1493 July, 2018

72.  Pritom J.Bora, Mayuri Porwal, K.J.Vinoy, Kishore, Praveen C.Ramamurthy, Giridhar Madras, " Industrial waste fly ash cenosphere composites based broad band microwave absorber ," Composites Part B: Engineering , vol. 134, pp. 151-163, Feb. 2018.

71.  Pritom J.Bora, Irthasa Azeem, K.J.Vinoy, Praveen C. Ramamurthy, Giridhar Madras, " Morphology controllable microwave absorption property of polyvinylbutyral (PVB)-MnO2 nanocomposites ," Composites Part B: Engineering , vol. 132, pp. 188-196, Jan. 2018.

2017

70.  Sudhanshu Shekhar, K. J. Vinoy, and G. K. Ananthasuresh," Surface-Micromachined Capacitive RF Switches With Low Actuation Voltage and Steady Contact ," J. Microelectromechanical Systems, Vol. 26, No. 3, pp. 643-652, June 2017.

69.  Pritom J. Bora, K.J. Vinoy, Praveen C. Ramamurthy, Kishore, Giridhar Madras, " Electromagnetic interference shielding effectiveness of polyaniline-nickel oxide coated cenosphere composite film ," Composites Communications, vol. 4, pp. 37-42. 2017

68.  Pritom J Bora, K J Vinoy, Praveen C Ramamurthy and Giridhar Madras, " Electromagnetic interference shielding efficiency of MnO2 nanorod doped polyaniline film ," Mater. Res. Express, vol. 4, 025013, 2017

2016

67. Pritom J Bora, K. J. Vinoy, Praveen C Ramamurthy, Kishore, and Giridhar Madras, " Lightweight Polyaniline-Cobalt Coated Fly Ash Cenosphere Composite Film for Electromagnetic Interference Shielding ,"Electron. Mater. Lett., Vol. 12, No. 5 pp. 603-609, 2016

66.  P. Keerthan, Ritesh Kumar, and K. J. Vinoy," A Novel All-Pass Network Implementation for Improved Group Delay Performance ," IEEE Microwaves and Wireless Components Letters, vol. 6, No. 10, pp. 804-807, Oct. 2016

65.  Keerthan P and KJ Vinoy, " Design of Cascaded All Pass Network with Monotonous Group Delay Response for Broadband Radio Frequency Applications ," IET Microwaves, Antennas and Propagation, 10(7), pp. 808-815, Jul.2016

64.  Arjun Shetty, Mahesh Kumar, Basanta Roul, K. J. Vinoy, and S. B. Krupanidhi, " InN Quantum Dot Based Infra-Red Photodetectors ," Journal of Nanoscience and Nanotechnology, vol. 15 , pp. 1-6, Jan.2016

2015

63.  Arjun Shetty, B. Roul, S. Mukundan, L. Mohan, G. Chandan, K. J. Vinoy and S. B. Krupanidhi, " Temperature dependent electrical characterisation of Pt/HfO2/n-GaN metal-insulator-semiconductor (MIS) Schottky diodes ," AIPAdvances, vol. 5, issue 9, 097103 (2015)

62.   M.N. Sujatha and K.J. Vinoy, Analysis of absorption characteristics of stacked patch arrays on moderately lossy dielectric layers, Applied Physics A, Vol.119, Issue 3, pp 1143-1148, June 2015.

61.   Pritom J Borah, K.J. Vinoy, Praveen C. Ramamurthy, Kishore and Giridhar Madras, Nickel coated flyash (Ni-FAC) cenosphere doped polyaniline composite film for electromagnetic shieldin Materials Research Express, 2015.

2014

60.   D. Packiaraj, K.J. Vinoy, M. Ramesh, AT Kalghatgi, Design of Cascaded Three Conductor Coupled Line Filter,  Microwave & Optical technology Letters, vol. 56, no. 10, pp. 2431-2436, 2014.

59.   D. Packiaraj, K.J. Vinoy, and M. Ramesh, High directivity DGS based Coupler, Journal of Electromagnetic Waves and Applications, 2014 DOI: 10.1080/09205071.2014.905212

57.    S. Kumar, V. Bhat, K.J. Vinoy, and V. Santhanam, Using an Office Inkjet Printer t Define the Formation of Copper Films on Paper, IEEE Trans. Nanotechnology, vol. 13, No. 1, pp. 160-164, Jan 2014.

2013

56.   D. Packiaraj, K.J. Vinoy, P. NagarajRao, M. Ramesh   and A. T. Kalghatgi, Miniaturized defected ground high isolation crossovers, IEEE Microwave and Wireless Components Letters. vol. 23, No.7, pp. 347-349, July 2013.

55.   D. Packiaraj, K.J. Vinoy, M. Ramesh   and A. T. Kalghatgi, Expressions for coupled microstriplines with aperture in ground plane and their use in synthesis of microstripline components, Journal of Electromagnetic Waves and Applications vol. 27, no. 7, pp. 856-867, 2013. (http://dx.doi.org/10.1080/09205071.2013.789410).

54.   Ranajit Sai, K.J. Vinoy, Navakanta Bhat, and S. A. Shivashankar, CMOS-Compatible and Scalable Deposition of Nanocrystalline Zinc Ferrite Thin Film to Improve per Area Inductance of Integrated RF Inductor, IEEE Trans Magnetics, Vol. 49, No. 7, pp. 4323-4326, July 2013

53.   G. Singh, R. Ponnaganti, T. V. Prabhakar, and K.J. Vinoy, A tuned rectifier for RF energy harvesting from ambient radiations, Int. J. Electronics & Communications, vol. 67, no. 7, pp. 564-569, July 2013

52.   D. Packiaraj, K.J. Vinoy, M. Ramesh, and A.T. Kalghatgi, Miniaturized Ultra Wide band Filter with Extended Stop band, Microwave & Opt. Technol. Lett., Vol. 55, No. 4, pp. 703-705, April 2013.

2012

51.    S. Behera and K.J. Vinoy, A Multi-port Network Approach for the Analysis of Conformal Dual band Fractal Antennas, IEEE Trans Antennas Propagat., Vol 60, No. 11, pp. 5100-5106, Nov 2012.

50.    S. Behera and K.J. Vinoy, Resonance Characteristics of Non-uniform width Square Ring Antennas, Progress in Electromagnetics Research PIER-C 31, pp. 53-66, 2012.

49.    D. Mani, V. Bhat, K.J. Vinoy, and E. Arunan, Towards a Broadband Chirped Pulse Fourier Transform Microwave Spectrometer Indian Journal of Physics, Volume 86, Number 3, pp. 225-235, 2012.

48.    K.J. Vinoy, Fractal Concepts for Antenna Design and Analysis, Annals of the Indian National Academy of Engineering., vol. IX, pp. 97-103, April 2012.

47.    C. Venkatesh, Navakanta Bhat, K.J. Vinoy, and G. Satish, Microelectromechanical torsional varactors with low parasitic capacitances and high dynamic range, Journal of Micro/Nanolithography, MEMS, and MOEMS (JM3- SPIE), Vol. 11, No. 1,  2012

46.    Ranajit Sai, Suresh Kulkarni, K.J. Vinoy, Navakanta Bhat, and S.A. Shivashankar, ZnFe₂O₄: Rapid and sub 100C synthesis and Anneal-tuned magnetic properties, J. Mater. Chem., 2012, 22 (5), 2149-2156

45.    D. Packiaraj, K. J. Vinoy, and A. T. Kalghatgi.  Approximate synthesis formulas for microstrip line with defected ground and its application International Journal of RF and Microwave Computer Aided Engg., Vol. 22, No. 1, pp. 124-130, Jan 2012.

2011

44.    K.A. Berthe and K.J. Vinoy, A new method for segmentation using fractal properties of images, International Journal of Electronics & Communication Technologies, pp. 23-28, Vol 2 Issue 4,  Oct-Dec 2011

43.    Poonam Goel and K.J. Vinoy, A low cost approach for the fabrication of microwave phase shifter on laminates, Microsystem Technologies (Springer), Vol. 17, No 10-11, pp. 1653-1660, 2011. [http://www.springerlink.com/ content/y17l0558801886xj/]

42.    D. Packiaraj, K.J. Vinoy, M. Ramesh, A.T. Kalghatgi, Varsha Chaware, and G. J. Phatak, LTCC Ultrawideband Filter, Microwave & Opt. Technol. Lett.-Wiley Vol. 53, No. 11, pp. 2580-2583, Nov. 2011.

41.   Sudhanshu Shekhar, K.J. Vinoy, and G.K. Ananthasuresh, Switching and release time analysis of electrostatically actuated capacitive RF MEMS switches, Sensors & Transducers, Vol.130, Issue 7, pp.77-90, July 2011.

40.    P. Goel and K.J. Vinoy, A low-cost phased array antenna integrated with phase shifters cofabricated on the laminate, Progress in Electromagnetics Research B, Vol. 30, 255-277, 2011.

39.    D. Packiaraj, K.J. Vinoy, A.T. Kalghatgi and M. Ramesh, Design of Compact Low Pass Filter with Wide Stop Band using Tri-section Stepped Impedance Resonator, Int. J. Electronics & Communications, Vol. 65, No. 12, pp. 1012-1014, Dec 2011.. [Available online 16 April 2011]

38.    D. Packiaraj, K.J. Vinoy, M. Ramesh and A.T. Kalghatgi, High selectivity miniaturized broadband filter, Microwave & Opt. Technol. Lett, vol. 53, No. 1, pp. 184-187, Jan 2011.

2010

37.    V.G. Kasebagoudar and K.J. Vinoy, Coplanar Capacitively Coupled Probe Fed Microstrip Antennas for Wideband Applications, IEEE Trans. Antennas Propagat., vol. 58, no. 10, no. pp. 3131-3138, Oct. 2010.

36.    M.N. Sujatha, and K.J. Vinoy, A stacked ring-patch artificial substrate to improve the antenna performance, Progress in Electromagnetics Research C, PIERC vol. 15, pp. 75-87, 2010.

35.    M. Sumathy, K.J. Vinoy, and S.K. Datta, Analysis of ridge-loaded folded-waveguide slow-wave structures for broadband traveling-wave tubes, IEEE Trans. Electron Devices. vol. 57 No. 6. pp. 1440-1446, 2010.

34.    Vedaprabhu B and K.J. Vinoy, An integrated wideband multifunctional antenna using a microstrip patch with two U-slots, Progress in Electromagnetics Research B, vol. 22., pp. 221-235, 2010

33.    M. Sumathy, K.J. Vinoy, and S.K. Datta, Analysis of serpentine folded-waveguide slow-wave structure using elliptical conformal transformation, Int. J. Electronics and Communications, vol. 65, pp. 161-164, Mar. 2010.

32.    D. Packiaraj, K.J. Vinoy, M. Ramesh and A.T. Kalghatgi, Design of a compact wideband bandpass filter, Microwave & Opt. Technol. Lett. Pp. 1387-1389, vol. 52 Issue 6 2010.

31.    K.J. Vinoy and A Pal, Dual frequency Characteristics of Minkowski-Square Ring Antennas, IET Microwaves, Antennas & Propagation, vol. 4 (2). pp. 219-224, 2010.

2009

30.    M. Sumathy, K.J. Vinoy, and S.K. Datta, A simple equivalent circuit analysis of rectangular folded-waveguide slow-wave structure, AEU Int. J. Electronics and Communications, vol. 64, pp. 1192-1194, Dec 2009.

29.    G.D. Makwana and K.J. Vinoy, Design of a compact rectangular dielectric resonator antenna at 2.4GHz, Progress in Electromagnetics Research PIER-C vol. 11, page 69-79, 2009

28.    D. Packiaraj, K.J. Vinoy, and A.T. Kalghatgi, Analysis and design of a two-layered layer ultra wide band filter Journal of Electromagnetic Waves & Applications, vol. 23, 8/9, pp. 1235-1243, 2009

27.    D. Packiaraj, K.J. Vinoy, and A.T. Kalghatgi, Analysis and design of a compact multi-layer ultra wide band filter Progress in Electromagnetics Research C, PIERC, Vol. 7, pp. 111-123, 2009.

26.    S. Behera and K.J. Vinoy, Microstrip Square Ring Antenna for Dual-Band operation Progress in Electromagnetics Research PIER 93, pp. 41-56, 2009

25.    V.G. Kasabegoudar and K.J. Vinoy, A broadband suspended microstrip antenna for circular polarization, Progress in Electromagnetics Research PIER 90, page 353-368, 2009

24.   K.J. Vinoy and P.U. Reddy, Design of narrowband bandpass filter on coplanar waveguide using spiral slots, Progress in Electromagnetics Research- Letters PIERL 6, pp. 139-148, 2009 [http://ceta.mit.edu/pierl/pier. php?paper=08122703].

23.  S.K. Gupta and K.J. Vinoy, A compact defected ground microstrip device with photonic bandgap effects, Journal of Electromagnetic Waves & Applications, vol. 23, No. 2/3, pp. 255-266, 2009

22.    M. Sumathy, K.J. Vinoy and S.K. Datta, Equivalent Circuit Analysis of Serpentine Folded-waveguide Slow-wave Structures for Millimeter-Wave Traveling-Wave Tubes, Int. J. Infrared and Milli., vol.30, pp.151-158,2009

21.    M. Sumathy, K.J. Vinoy and S.K. Datta, Analysis of Rectangular Folded-Waveguide Millimeter-Wave Slow-wave Structures using Conformal Transformations, Int. J. Infrared and Millimeter Waves, vol. 30, pp. 294-301, 2009

20.    A Pal, S. Behera, and K.J. Vinoy, Design of Multi-frequency Microstrip Antennas using Multiple Rings, IET Microwaves, Antennas & Propagation, vol. 3, pp. 77-84, 2009.  

2004- 2008

19.    M.R. Solanki, Usha Kiran K., and K.J. Vinoy, Broadband Designs of a Triangular Microstrip Antenna with a Capacitive Feed, J. Microwaves, Optoelectronics and Electromagnetic Applications, vol. 7, no. 1, pp. 44-53, June 2008. 

18.    Veeresh G.K. and K.J. Vinoy, A Wideband Microstrip Antenna  With Symmetric Radiation Patterns, Microwave & Optical Technology Letters, pp. 1991-1995, vol. 50, Aug 2008

17.    Veeresh G.K. D.S. Upadhyay, and K.J. Vinoy, Design studies of ultra-wideband microstrip antennas with a Small capacitive feed, Int. J. Antennas Propagat. 2007. [http://www.hindawi.com/journals/ijap/volume-2007/]  

16.    K. Sengupta and K.J. Vinoy, A New Measure of Lacunarity for Generalized Fractals and its Impacts in Electromagnetic Behavior of Generalized Koch Dipole Antennas, Fractals Vol. 14, No. 4,  271-282. 2006

15.    I. Paul and K.J. Vinoy, Design optimization of micromachined ferroelectric based phase shifter using modified ground coplanar waveguide, Microwave & Optical Technology Letters, vol. 46, pp. 185-188, 2005

14.    R.S. Kshetrimayum, L. Zhu, and K.J. Vinoy, Equivalent material parameter extraction of double strip loaded waveguide, IEICE Electronics Express, vol. 2, pp. 165-169, 2005

13.    V.K Varadan, J. Xie, K.J. Vinoy, and H. Yoon, Nano- and micro-devices for performance improvement of SSP system, URSI Radio Science Bulletin- pp. 36-47, Sept 2004. 

12.    K.J. Vinoy, K.A. Jose and V.K. Varadan, Impact of fractal dimension in the design of multi-resonant fractal antennas, Fractals, vol. 12, pp. 55-66, 2004. 

1995- 2003

11.    K.J. Vinoy, K.A. Jose and V.K. Varadan, Generalized design of multi-resonant dipole antennas using Koch curves, Applied Computational Electromagnetics Society Journal. pp. 22-31, vol 19, no. 1a, 2004. 

10.    T. Ji, K.J. Vinoy, and V.K. Varadan, Use of polymer and ceramic thin film materials to reduce the actuation voltage of distributed MEMS phase shifter, Smart Materials and Structures, vol. 12 No 6 pp. N9-N13 Dec. 2003. 

9.      H. Yoon, K.J. Vinoy, and V.K. Varadan, Design and development of micromachined bilateral interdigital coplanar waveguide RF phase shifter compatible with LDMOS voltage controller on Silicon, Smart Materials and Structures, vol. 12, pp. 769-775, 2003.

8.      K.J. Vinoy, K.A. Jose and V.K. Varadan, On the relationship between fractal dimension and the performance of multi-resonant dipole antennas using Koch curves, IEEE Trans. Antennas Propagat., vol. 51, pp. 2296-2303, 2003. 

7.      K.J. Vinoy and V.K. Varadan, Design of reconfigurable fractal antennas and RF-MEMS for space-based systems, Smart Materials and Structures, vol. 10, pp. 1211-1223, 2001 

6.      T.S. Ji, K.J. Vinoy, and V.K. Varadan, Distributed MEMS phase shifters by microstereolithography on silicon substrates for microwave and millimeter wave applications, Smart Mater. & Struct., vol. 10, pp. 1224-1229, 2001 

5.      K.J. Vinoy, K.A. Jose, V.K. Varadan, and V.V. Varadan, Hilbert curve fractal antenna: a small resonant antenna for VHF/UHF applications, Microwave & Optical Technology Letters, vol. 29, pp. 215-219, 2001.

4.      P.T. Teo, K.J. Vinoy, K.A. Jose, V.K. Varadan, V.V. Varadan, and Y.B. Gan, Design and development of tunable multi-layer smart antennas using ferroelectric materials, J. Intelligent Material Systems and Structures, vol. 11, no. 4 pp. 294-299, Apr 2000. 

3.      V.K. Varadan, K.A. Jose, K.J. Vinoy, and V.V. Varadan, Semiconductor polymer based RF MEMS and its applications to microwave systems, Journal of  Wave-Material Interaction, vol. 15, pp. 44-58, 2000.

2.      K.J. Vinoy, K.A. Jose, V.K. Varadan, and V.V. Varadan, Gain-enhanced electronically tunable microstrip patch antenna, Microwave & Optical Technology Letters, vol. 23, pp. 368-370, 1999. 

1.      K.J. Vinoy and R.M. Jha, Trends in radar absorbing materials technology, Sadhana-Proc. Ind. Acad. Sci., vol. 20, pt. 5, pp. 815-850, 1995.

Conference/Symposia  Back to TOP

2022

S Roy, A. Roy, and KJ. Vinoy, “Implementation of Noncoherent Media-Based Modulation With a Reconfigurable Metasurface,” 2022 IEEE Microwaves Antennas and Propagation Conference (MAPCON), Bengaluru, Dec 12-16, 2022.

A. Augustine and KJ Vinoy, “A Wideband Substrate Integrated Waveguide Bandpass Filter for 5G Millimeter Wave Transceiver,” 2022 IEEE Microwaves Antennas and Propagation Conference (MAPCON), Bengaluru, Dec 12-16, 2022.

S. Deshmukh and KJ Vinoy, “Design and Development of RADAR for Detection of Drones and UAVs” 2022 IEEE Microwaves Antennas and Propagation Conference (MAPCON), Bengaluru, Dec 12-16, 2022.

K Neema, A Manoharan, KJ Vinoy, DD Krishna, “Reconfigurable Intelligent Surface for Highly Efficient Electromagnetic Functionality,” 2022 IEEE Wireless Antenna and Microwave Conference, 2022

2021

A. Roy, K. J. Vinoy, N. Martin, C. Quendo, and S. Mallégol. "Performance Enhancement of A Compact Archimedean Spiral Antenna for 2-18 GHz." In 2021 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting (APS/URSI), pp. 289-290. IEEE, 2021.

KJ Vinoy, “Design of Front-End Modules for MMwave 5G Communication,” Presented at URSI Regional Conference on Radio Science, Varanasi, 12-14 Feb 2020.

Supantha Sen, Anand Kalwar, K.J Vinoy, T.V Prabhakar, and V Chandrasekar, “FMCW Radars for Volume Scattering from Precipitation,” Presented at URSI Regional Conference on Radio Science, Varanasi, 12-14 Feb 2020.

2019

Abhijith BN and K.J. Vinoy, “Uncertainty Quantification Due to Geometric Variations in  Dielectric Resonator Circuits,” presented at IEEE International Microwave and RF Conference, Mumbai, Dec 12-14, 2019. 

Ajay Kochar and K.J. Vinoy, “An Analysis of Achievable Highest SLL in Moderate Phased Arrays with Quantized Control,” presented at IEEE International Microwave and RF Conference, Mumbai, Dec 12-14, 2019. 

Ajay Kochar and K.J. Vinoy, “SLL Degradation due to Quantized Phase Control in Moderate Phased Arrays,” presented at IEEE Indian Conference on Antennas and Propagation, Ahmedabad, Dec 19-22, 2019.  

A. Roy and KJ Vinoy, A Reconfigurable Array, 49th European Microwave Conference (EuMC), Oct 1-3, 2019, pp. 880-883, 10.23919/EuMC.2019.8910794

R Kumar, KJ Vinoy, “Design and Implementation of High Frequency and Large Group Delay Bridged-T All Pass Network,” 2019 49th European Microwave Conference (EuMC), Oct 1-3, 2019, pp. 376-379, 10.23919/EuMC.2019.8910704

KJ Vinoy and G Hemanth, Stochastic Collocation based FEM Procedure for Terahertz Structures, Presented at USRI Asia Pacific Radio Science Conference, March 9-19, 2019.

Abhijith BN and K J Vinoy, Stochastic Finite Element Method for Electromagnetic Material Property Variations Over Multiple Subdomains, Presented at USRI Asia Pacific Radio Science Conference, March 9-19, 2019.

TR Sureshkumar and KJ Vinoy, Design of 4 GHz 1-Bit Phase Quantized Beam Steering Transmitarray, Presented at USRI Asia Pacific Radio Science Conference, March 9-19, 2019.

2018

Gladwin Jos K T and Vinoy K J FEM based Methods for Uncertainty Quantification in Electromagnetics, presented at IEEE Indian Conference on Antennas and Propagation, Hyderabad, Dec 16-19, 2018.

Abhijith B N and Vinoy K J Spectral Stochastic Edge Element Method for Complex EM Problems, presented at IEEE Indian Conference on Antennas and Propagation, Hyderabad, Dec 16-19, 2018.

KJ Vinoy and Anuj Malik Efficient Synthesis of Scanned Conformal Arrays with Chebyschev Patterns, presented at IEEE Indian Conference on Antennas and Propagation, Hyderabad, Dec 16-19, 2018.

Suresh Kumar T R and Vinoy K J, Tri-Band Band-Stop Frequency Selective Surface using Tortuous Jerusalem Cross with Angularly Stable Response, presented at IEEE Indian Conference on Antennas and Propagation, Hyderabad, Dec 16-19, 2018.

Vijayashree Bhat, Vinod Jacob, Rakesh M.R, K J Vinoy and T.V Prabhakar Design of a High Gain Antenna for a Passive Radar, presented at IEEE Indian Conference on Antennas and Propagation, Hyderabad, Dec 16-19, 2018.

Raja Sharma, Prakhar Jain and KJ Vinoy, Design of a Compact PIFA for Telemetry Applications, presented at IEEE Indian Conference on Antennas and Propagation, Hyderabad, Dec 16-19, 2018.

Vinod Kurian Jacob, Rakesh M. R., T. V. Prabhakar and K.J. Vinoy, RF System Design for Passive Detection of Humans, presented at IEEE International Microwave and RF Conference, Kolkatta, Nov 28-30, 2018.

Srijan Datta and K. J. Vinoy Design of a Compact Radio Frequency Cavity Resonator as a Sensor for Dielectric Liquids presented at IEEE International Microwave and RF Conference, Kolkatta, Nov 28-30, 2018.

Aritra Roy and K Vinoy,  A Reconfigurable Screen in the Antenna Nearfield for Media-Based Modulation Scheme, presented at IEEE International Microwave and RF Conference, Kolkatta, Nov 28-30, 2018.

A. Bansiwal, S. Raina, S. K. Datta and K. J. Vinoy, "Effect of surface roughness on bandwidth of a high frequency multiple beam klystron," 2018 3rd International Conference on Microwave and Photonics (ICMAP), Dhanbad, 2018, pp. 1-2. 

2017

Ashok Bansiwal, Sushil Raina, KJ Vinoy and SK Datta, An Equivalent Circuit Analysis of a High Frequency Rectangular Reentrant Cavity, National Symposium on Vacuum Electronic Devices & Applications-2017, IIT Roorkee, Uttarakhand, India, 17-19 Nov, 2017.

Ashok Bansiwal, Sushil Raina, KJ Vinoy and SK Datta, , An Investigation on Quality Factor of a High Frequency Multiple Beam Klystron Cavity, National Symposium on Vacuum Electronic Devices & Applications -2017, IIT Roorkee, Uttarakhand, India, 17-19 Nov, 2017.

S.A. Sivaram and K. J. Vinoy, "A hybrid structured-unstructured meshing approach for time domain EM analysis of curved geometries," 2017 Progress In Electromagnetics Research Symposium - Spring (PIERS), St. Petersburg, 2017, pp. 3739-3745.

V. Monga and K. J. Vinoy, "Equal sidelobe patterns for microstrip patch antenna arrays," 2017 IEEE International Conference on Antenna Innovations & Modern Technologies for Ground, Aircraft and Satellite Applications (iAIM), Bangalore, 2017, pp. 1-5.

Pritom J. Bora, K. J. Vinoy, Kishore, Praveen C. Ramamurthy, Giridhar Madras, Lightweight Microwave Absorber from Industrial Waste Fly Ash Cenosphere, Advances in Smart Grid and Renewable Energy pp 459-466,/Springer Lect. Notes Electrical Engg., 435, 45 2017

K.K. Khanum, P.J. Bora, K.J. Vinoy and P.C. Ramamurthy, "Evaluation of electromagnetic interference shielding using Poly(3,4-ethylenedioxythiophene) Polystyrene sulfonate blend," 2016 3rd International Conference on Emerging Electronics (ICEE), Mumbai, 2016, pp. 1-4.

P.J. Bora, I. Azeem, K. J. Vinoy, P. C. Ramamurthy and G. Madras, "Microwave absorption property of PVB-polyaniline nanocomposite," 2017 IEEE Asia Pacific Microwave Conference (APMC), Kuala Lumpar, 2017, pp. 674-677.

Vijayashree Bhat, Ritesh Kumar and KJ Vinoy, Wideband Monopulse Antenna System for Short Range CW RADAR Application, Presented at Asia Pacific Microwave Conference Kuala Lumpur, 2017.

Ritesh Kumar and KJ Vinoy, Signal Diversity Using Reconfigurable All Pass Networks for Wideband Systems, Presented at Asia Pacific Microwave Conference Kuala Lumpur, 2017 

2016

S Datta, A Jose, KJ Vinoy, Design of an ultra high frequency wireless charging station, 2016 IEEE Annual India Conference (INDICON), Bangalore, 16-18 Dec 2016.

Y Syed, BG Hegde, TV Prabhakar, M Manjunath, KJ Vinoy, RF energy harvesting chip powered sensor node, 2016 IEEE International, Electronics, Circuits and Systems (ICECS), Monte Carlo Monaco, 11-14 Dec 2016.

A Murugkar, R Panigrahi, KJ Vinoy, A novel approach for high Q microwave re-entrant cavity resonator at S-band, 2016 IEEE MTTS Asia-Pacific Microwave Conference (APMC), New Delhi, 5-6 Dec 2016.

R Kumar, P Keerthan, KJ Vinoy, Design of wideband semi-lumped all-pass network for linear group delay response, 2016 IEEE MTTS Asia-Pacific Microwave Conference (APMC), New Delhi, 5-6 Dec 2016

R Panigrahi, KJ Vinoy, MJ Thomas, A low cost approach for realization of W band folded waveguide travelling wave tube, 2016 IEEE MTTS Asia-Pacific Microwave Conference (APMC), New Delhi, 5-6 Dec 2016.

P Keerthan, R Kumar, KJ Vinoy, Wide-band real-time frequency measurement using compressive receiver, 2016 International Conference on Signal Processing and Communications (SPCOM), Bangalore, 12-15 June 2016.

R Panigrahi, KJ Vinoy, MJ Thomas, Multiple square beam hole slow wave structure at W band, 2016 IEEE International Vacuum Electronics Conference (IVEC), Montery, CA, USA, 19-21 April 2016

Sanjeev K, M Machnoor, KJ Vinoy, TV Prabhakar, A High Efficiency 2.4 GHz RF to DC Converter using 130nm CMOS Cross-Coupled Rectifier, 2016 Twenty Second National Conference on Communication (NCC), Guwahati, 4-6 March 2016 

2010-2015

Srinaga Nikhil N and KJ Vinoy, Design of a compact dual-band antenna for RF power transfer in an aircraft fuel tank, Applied Electromagnetics Conference (AEMC), 2015 IEEE, Guwahati, 18-21, Dec 2015

RK Shukla, Srinaga Nikhil N, KJ Vinoy, Radiation efficiencies of a compact planar antenna with different meander line configurations, Applied Electromagnetics Conference (AEMC), 2015 IEEE, Guwahati, 18-21, Dec 2015

K Sanjeev, M Machnoor, KJ Vinoy, TV Prabhakar, Some practical considerations of RF to DC converter using low Vth CMOS rectifier, Applied Electromagnetics Conference (AEMC), 2015 IEEE, Guwahati, 18-21, Dec 2015

S Rana, TV Prabhakar, KJ Vinoy, An efficient architecture for battery-less terminals for internet of things, Applied Electromagnetics Conference (AEMC), 2015 IEEE, Guwahati, 18-21, Dec 2015

R Kumar, P Keerthan, KJ Vinoy, Design of wideband tunable dispersive delay using cascaded all pass networks, IEEE MTT-S International Microwave and RF Conference (IMaRC), pp. 109-112, 10-12 Dec 2015

AK Agrawal, KJ Vinoy, Microstrip coupled line bandpass filter using quasi minkowski fractal shape for suppression of the second harmonic, IEEE MTT-S International Microwave and RF Conference (IMaRC), pp. 109-112, 10-12 Dec 2015

N Jose, N John, P Jain, P Raja, TV Prabhakar, KJ Vinoy, RF powered integrated system for IoT applications, 2015 IEEE 13th International New Circuits and Systems Conference (NEWCAS), 2015

Neeraj Kumar Singh, K.J. Vinoy and S. Gopalakrishnan, A Reduced Order Model for Electromagnetic Scattering using Multilevel Krylov Subspace Splitting, IEEE International Conference n Computational Electromagnetics ICCEM, Hong Kong, February 2-5, 2015

T.V. Prabhakar, U. Mysore, U.S. Saini, K.J. Vinoy and B. Amruthur, NFC products for pervasive healthcare, VLSI Design and Embedded Systems Conference, Bangalore, Jan. 3-7, 2015.

S. Kumar, S. Nikhil and KJ Vinoy, Design of a Compact Antenna for the Wireless Networking of Energy Meters, National Symposium on Antennas & Propagation, APSYM 2014, Kochi, Dec 17-19, 2014

M. N. Sujatha and K. J. Vinoy, Bistatic RCS measurement for an electromagnetic absorber using a stacked ring-patch array, National Symposium on Antennas & Propagation, APSYM 2014, Kochi, Dec 17-19, 2014

S. Shekhar, G.K. Ananthasuresh, K.J. Vinoy, Design, Fabrication and Characterization of A Capacitive RF MEMS Switch with a Very-Low Pull-In Voltage, IEEE International Microwave and RF Conference, Bangalore, Dec 15-17, 2014 (Finalist for Best Student Paper Contest)

Keerthan P, Abhay Kumar, K.J. Vinoy, Real-Time Frequency Discriminator Using Two Stage All-Pass Network, IEEE International Microwave and RF Conference, Bangalore, Dec 15-17, 2014. (Shortlisted for Best Paper Prize Presentation)

Neeraj Kumar Singh, K.J. Vinoy and S. Gopalakrishnan, Efficient Finite Element Model Order Reduction of Electromagnetic Systems using Fast Converging Jacobi-Davidson Iteration, IEEE International Microwave and RF Conference, Bangalore, Dec 15-17, 2014

Selvanayaki K, V. Ramachandra, and K.J. Vinoy, Planar Micro-Wire Array with Microwave Plasma Frequency and Use of its Near Zero ε for Antenna Gain Enhancement,  IEEE International Microwave and RF Conference, Bangalore, Dec 15-17, 2014

G. Hemanth, K.J. Vinoy and S. Gopalakrishnan, Spectral Stochastic Finite Element Method for Periodic Structure, IEEE International Microwave and RF Conference, Bangalore, Dec 15-17, 2014. (Winner Best Student Paper Contest) 

S. Shekhar, G. K. Ananthasuresh, K. J. Vinoy, Fabrication and Characterization of High-Isolation Low Pull-in Voltage Shunt Capacitive RF MEMS Switches, ISSS International Conference on Smart Materials Structures & Systems, Bangalore July 8-11, 2014.

J. Bommer, A. Robb, R. Martinez, S. Ramamurthy, J. Harrigan, H. Muniganti, V. Mannangi and K.J. Vinoy, Wireless Aircraft Fuel Quantity Indication System, 2014 Sensors Applications Symposium, Rydges Lakeland Resort Queenstown, New Zealand, Feb 18-20,2014. 

MN Sujatha and KJ Vinoy, A Thin Radar Absorbing Material using a Stacked Ring-Patch Array Presented at IEEE Applied Electromagnetics Conference AEMC 2014, at Bhubaneshwar, Dec 18-20, 2013.

Harikiran Muniganti and KJ Vinoy, Design of Ultra Wideband Conformal Antenna Array on a Concave Surface for Medical Imaging Applications, Presented at IEEE Applied Electromagnetics Conference AEMC 2014, at Bhubaneshwar, Dec 18-20, 2013.

Harikiran Muniganti, Vivekanand Mannangi, KJ Vinoy, JP Bommer and SE Marston, Immersible Antenna for RF Energy Harvesting, Presented at IEEE Applied Electromagnetics Conference AEMC 2014, at Bhubaneshwar, Dec 18-20, 2013.

Manjunath M., R. Kumar, P. Muralidharan,TV Prabhakar and KJ Vinoy, Carpet Integrated RF Front-end for an RFID System for Endurance Tests, Presented at IEEE Applied Electromagnetics Conference AEMC 2014, at Bhubaneshwar, Dec 18-20, 2013.

Neeraj Kumar, K.J. Vinoy, S. Gopalakrishnan, Jacobi-Davidson Iteration based Reduced Order Finite Element Models for Radar Cross-Section, Presented at IEEE Applied Electromagnetics Conference AEMC 2014, at Bhubaneshwar, Dec 18-20, 2013.

Neeraj Kumar, K. J. Vinoy and S. Gopalakrishnan, Augmented Krylov Model Order Reduction for Finite Element Approximation of Plane Wave Scattering Problems, Presented at IEEE International Microwave & RF Conference, Dec 14-16, 2013.

D. Packiaraj, K. J. Vinoy, Subha Laxmi Rath, M. Ramesh and A. T. Kalghatgi, Ultra Wide Band Filter Using Shorted Meandered Coupled Lines and Stepped Line Stubs, International Radar Symposum 2013, Dec 10-14, 2013, Bangalore.

Arjun Shetty, K J Vinoy, S B Krupanidhi, Effect of Electrode Geometry and Presence of Au Nanoparticles on Properties of GaN based Metal-Semiconductor-Metal (MSM) Ultraviolet (UV) Photodetectors, Presented at ISSS National Conference on MEMS Smart Materials and Systems, Sept 6-7, 2013.

Rajiv Panigrahi, Gopal Hegde, K J Vinoy, Joy Thomas M., Design and Fabrication of Serpentine Travelling Wave Tube at THz Frequencies, Presented at ISSS National Conference on MEMS Smart Materials and Systems, Sept 6-7, 2013.

S. Bose and K.J. Vinoy, Group delay engineering using uascaded all pass filters for wideband chirp waveform generation, 2013 IEEE International Conference on Electronics, Computing, Communication Technologies, Bangalore, Jan 16-17, 2013.

R Sai, S.D. Kulkarni, K.J. Vinoy, N. Bhat, S. A. Shivashankar, CMOS-compatible and scalable deposition of nanocrystalline zinc ferrite thin films to improve the per area inductance of integrated RF inductor, 12th Joint MMM/Intermag Conference, Jan 14-18, 2013, Chicago, IL, USA

N.Kumar, K.J.Vinoy, S.Gopalakrishnan, A Model Order Reduction Method and its Application in Wideband Wave Propagation Studies through General Media,National Symposium on Antennas & Propagation, APSYM 2012, Kochi, Dec 17-19, 2012

D. Packiaraj, K.J. Vinoy, M. Ramesh, and A.T. Kalghatgi, DGS based Ultra Wide Band Filter, International Symposium on Microwaves, ISM 2012, Dec 7-10, 2012

N.Kumar, K.J.Vinoy, S.Gopalakrishnan, A Model Order Reduction Method and its Application for Finite Element Analysis of Inhomogeneous Slabs,International Symposium on Microwaves, ISM 2012,Dec 7-10, 2012

M.N. Sujatha and K.J. Vinoy, Compact Polarization Dependent EBG Surface with Fractal Boundary Patches, Accepted for APCAP Singapore, 27-29 Aug. 2012

S. Behera and K.J. Vinoy, Multi-port network modeling of stub loaded Microstrip ring antenna for dual-band operations, Accepted for APCAP Singapore, 27-29 Aug. 2012

Vijayashree Bhat and K.J. Vinoy, Studies on Ultra Wideband Triangular Patch Antennas for Imaging Applications, Accepted for APCAP Singapore, 27-29 Aug. 2012

Sudhanashu Shekar, K.J. Vinoy and G.K. Ananthasuresh, Switching and release dynamics of an electrostatically actuated MEMS switch under the influence of squeeze film damping, TechConnect World Conference and Expo, Santa Clara, California, U.S.A, June 18-21 2012

R Sai, S. D. Kulkarni, K. J. Vinoy, N. Bhat, S. A. Shivashankar, Rapid CMOS compatible ZnFe2O4 film deposition for enhanced inductance of integrated RF inductors, Submitted to More than Moore: Novel materials approaches for functionalized Silicon based Microelectronics of the E-MRS 2012 Spring Meeting, Strasbourg (France) from May 14 to 18, 2012.

R. Sai, S. D. Kulkarni, K. J. Vinoy, N. Bhat, S. A. Shivashankar, Low-Thermal-Budget Solution Processing of Thin Films of Zinc Ferrite and Other Complex Oxides, Submitted to MRS Fall Meeting 2012.

D. Packiaraj, M. Ramesh  A. T. Kalghatgi, and K. J. Vinoy,  Analysis of modified microstrip line and its application, Presented at National Conference on Communications, Kharagpur, India, January 2012.

G. Hemanth, K. J. Vinoy, and S. Gopalakrishnan,  Spectral element method for electromagnetic problems, International conference on smart materials structures and systems 2012, Bangalore, India, Jan 4-7, 2012.

D. Packiaraj, K. J. Vinoy, M. Ramesh,  A. T. Kalghatgi, Varsha Chaware and G. J. Phatak,  Miniaturized Multi-layer LTCC  RF Broadband devices, International conference on smart materials structures and systems 2012, Bangalore, India, Jan 4-7, 2012.

M. Sumathy, K. J. Vinoy and S. K. Datta, Analysis of rectangular folded waveguide SWS with grating on the broad wall, IEEE Int.  Vacuum electronics conference, Bangalore, India, Feb. 2011 pp.193-194.

D. Packiaraj, K. J. Vinoy, M. Ramesh and A. T. Kalghatgi   A multi-layer ultra wide band power splitter, International Radar Sympisum India 2011, Bangalore, India, Dec 1-4, 2011.

D. Packiaraj, K. J. Vinoy, M. Ramesh and A. T. Kalghatgi   Elliptic shaped resonators for UWB filter, International conference on RF and Wireless 2011, Seremban, Malaysia, Dec 12-13, 2011.

K.J. Vinoy, Multifunctional Microstrip Antennas for Wireless Applications, IEEE Applied Electromagnetics Conference (IEEE AEMC) and IEEE Indian Antenna Week (IEEE IAW), Dec 18-22, 2011.

Subhrakanta Behera and K. J. Vinoy, Multi-port Network Modeling for Fractal Shape Microstrip Antenna, Accepted at International Symposium on Antennas & Propagation, Korea Oct 25-28, 2011.

Ranajit Sai, Suresh D. Kulkarni, K. J. Vinoy, Navakanta Bhat, and S. A. Shivashankar, Rapid synthesis of nanocrystalline ZnFe2O4 in solution and its simultaneous high-rate coating on Si(100): a CMOS-compatible process to enable integration of ferrites for RFIC, Submitted to MRS Spring Meeting 2011.

Rakesh S Lal and K.J. Vinoy, Generation of a Short-Duration Ultrawideband Chirped-Pulse Using CRLH Transmission Lines, Presented at National Conference on Communications, Bangalore January 2011.

D. Packiaraj, M. Ramesh and A.T. Kalghatgi and K.J. Vinoy, Dual Band (WLAN & WiMAX) suppressed harmonic microstrip filter with perturbed ground, Presented at National Conference on Communications, Bangalore January 2011.

Pramod M and K.J. Vinoy, Electronically tunable zero-order resonator based on CRLH-TLs, Presented at National Conference on Communications, Bangalore January 2011.

K.J. Vinoy, New possibilities with multifunctional microstrip antennas for wireless applications, Invited Paper, National Symposium on Antennas and Propagation APSYM 2010, Dec 14-17, 2010.

Vijayashree T Bhat, Vedaprabhu B, and K.J Vinoy, Evaluation of the performance of a multi-band antenna for on-board applications, Presented at Int. Symp. Antennas Propagat., Macao, China, Nov 23-26, 2010.

Trishna Mandal, Gijo Augustian, and K.J. Vinoy, Development of a dual band antenna from finite ground coplanar wave guide, Presented at Int. Symp. Antennas Propagat., Macao, China, Nov 23-26, 2010.

D. Packiaraj, K. J. Vinoy, M. Ramesh, A. T. Kalghatgi And G. J. Phatak, Design of an Ultra-wideband Multi-layer Coupler Accepted for International Symposium on Microwaves, ISM 2010, Bangalore, Dec 11-14, 2010.

G. D. Makwana and K.J. Vinoy Low-profile and Wideband Rectangular Dielectric Resonator Antenna Accepted for International Symposium on Microwaves, ISM 2010, Bangalore, Dec 11-14, 2010.

Pramod M. and K.J. Vinoy, Electronically Tunable Band Pass Filter based on CRLH-TLs, Accepted for International Symposium on Microwaves, ISM 2010, Bangalore, Dec 11-14, 2010.

Girish M. Prabhu and K. J. Vinoy, Design of ultra wide band pass filter based on composite right/left handed transmission lines, Accepted for International Symposium on Microwaves, ISM 2010, Bangalore, Dec 11-14, 2010

M. Sumathy, K.J. Vinoy, and S.K. Datta, Analysis of a ridge-loaded rectangular folded-waveguide SWS, IEEE Int. Vac. Electron. Conf. 2010

M. Sumathy, K.J. Vinoy, and S.K. Datta, Non-resonant perturbation formula for interaction impedance measurement for a folded-waveguide SWS, IEEE Int. Vac. Electron. Conf. 2010

Vedaprabhu B and K.J Vinoy, A Double U-slot Patch Antenna with Dual Wideband Characteristics, Presented at National Conference on Communications, IIT Madras, January 2010.

A. Singh and K. J. Vinoy, Modeling of Propagation Characteristics of Non-linear Transmission Lines with Loss, Presented at National Conference on Communications, IIT Madras, January 2010.

D. Packiaraj, K.J. Vinoy, M. Ramesh and A.T. Kalghatgi, Elliptic slot antenna for Broadband wireless communications, Presented at for National Conference on Communications, IIT Madras, January 2010.

 

2009-2003

D. Packiaraj, K.J. Vinoy, M. Ramesh and A.T. Kalghatgi, A Compact Two Layer Broadside Coupled UWB Filter, Presented at Asia Pacefic Microwave Conf., Singapore, Dec 7-10, 2009.

D. Packiaraj, K.J. Vinoy, M. Ramesh and A.T. Kalghatgi, Design of a compact multi-layer band pass filter, Presented at Int. Radar Symp. India, Bangalore, Dec 8-11, 2009.

G.D. Makwana and K.J. Vinoy, Wideband Microstrip fed Stacked Rectangular Dielectric Resonator Antenna for WLAN application, Presented at Int. Symp. Antennas Propagat., Bangkok, Tailand, Oct 20-23, 2009.

V.G. Kasebegoudar and K.J. Vinoy, Input Impedance Modeling of a Capacitively Coupled Wideband Microstrip Antenna, Presented at Int. Symp. Antennas Propagat., Bangkok, Tailand, Oct 20-23, 2009.

Poonam Goel and K.J. Vinoy, An Electrostatically Actuated Phase Shifter on Printed Circuit Board for a Low cost Phased Array Antenna, Presented at ISSS National Conference on MEMS, Oct 17-19, 2009.

S. Shekhar, K.J. Vinoy and G.K. Anathasuresh,Analysis of Transient Behavior of Electostatically Actuated Micromachined Switches Presented at ISSS National Conference on MEMS, Oct 17-19, 2009.

Usha Kiran K., Sripadaraja K., Mubassira Banu S.N. and K. J. Vinoy, Design and Development of SPST MEMS Switches, Presented at National Symposium on Antennas & Propagation APSYM 2006, Kochi, Dec 29-31, 2008

M.N. Sujatha and K.J. Vinoy Planar Multilayer Artificial Substrate to Improve the Performance of Microstrip Antennas, Presented at International Symposium on Microwaves, ISM 2008, Bangalore, Dec 3-6, 2008.

Subhrakantha Behera and K.J. Vinoy, Design of dual frequency microstrip ring antennas, presented at IEEE International Symposium on Microwaves, ISM 2008, Bangalore, Dec 3-6, 2008.

Makwana Gautam D. and K. J. Vinoy, A Microstrip line fed Rectangular Dielectric Resonator Antenna for WLAN Applications, Presented at IEEE International Symposium on Microwaves, ISM 2008, Bangalore, Dec 3-6, 2008.

Umakant Goyal, K.J.Vinoy, and Bharadwaj Amrutur,  Narrow band and low insertion loss bandpass filter using open�loop resonator, presented at IEEE International Symposium on Microwaves, ISM 2008, Bangalore, Dec 3-6, 2008.

P.C. Ooi and K.T. Selvan, and K.J. Vinoy, Multiband Behaviour of Modified Parany Gasket Monopole Antennas, Accepted at IEEE International Symposium on Microwaves, ISM 2008, Bangalore, Dec 3-6, 2008.

M. Sumathy, K.J. Vinoy and S.K. Datta, An Equivalent Circuit Analysis for Rectangular Folded-Waveguide SWS, Accepted Symposium on Vacuum Electronic Devices and Applications (VEDA-2009), January 8-10, 2009, IT BHU, Varanasi, UP, India.

V.G. Kasebegoudar and K.J. Vinoy, A Fractal Shaped Suspended Microstrip Antenna for Circular Polarization, Accepted APMC 2008, Dec 16-20, 2008, Hongkong, China.

Sanjeev Kumar Gupta and K.J. Vinoy, Miniaturization of Micro strip Photonic Bandgap Structures, Accepted APMC 2008, Dec 16-20, 2008, Hongkong, China.

K.J. Vinoy and B. Sugumaran, A Flexible Design Approach for a Dual-Frequency Microstrip Ring Antenna, Presented at Int. Symp. Antennas Propagat., Taipei, Taiwan ROC, Oct 27-30, 2008

V.G. Kasebegoudar and K.J. Vinoy, Input Impedance Modeling of a Capacitively Coupled Wideband Microstrip Antenna, Presented at Int. Symp. Antennas Propagat., Taipei, Taiwan ROC, Oct 27-30, 2008.

A. Raghunathan, P. Raj kumar, N. Udaya shankar, and K.J. Vinoy, Ultra wide band low noise amplifier for low frequency applications in radio astronomy, Accepted for URSI General Meeting, Chicago, IL USA August 7-16, 2008.

M. Sumathy, K.J. Vinoy, and S.K. Datta, Analysis of Serpentine folded-waveguide slow-wave structures by elliptical conformal transformation, IEEE Int. Vac. Electron. Conf. Montery, Canada; 22-24 April 2008, pp. 109-110.

M.R. Solanki, Usha Kiran K., and K.J. Vinoy, Some studies on broadband triangular microstrip antennas,� Presented at MCDES-08. (Indian Institute of Science, Bangalore; 27-31 May 2008)

Mubassira Banu S.N., K.J. Vinoy, M.S. Giridhar, and R. Islam, Design and Development Studies of RF MEMS Switches, presented at Annual Conference of IISc-ISRO Space Technology Cell, Bangalore, Jan 30-31, 2008.

Ayan Roy and K. J. Vinoy, A CAD Based Approach for Design and Optimization of Periodic Planar Microwave Circuits, presented at CASST�2007 Conference on Advances in Space Science and Technology, Bangalore, Jan 29-31, 2007.

Sumy Jose and K.J. Vinoy, RF MEMS Switches and Their Power Handling Studies, Invited paper at CASST�2007 Conference on Advances in Space Science and Technology, Bangalore, Jan 29-31, 2007.

Sumy Jose, H.H .Sidhwa and K.J. Vinoy, and V.K. Lakshmeesha, Design Study of Micromachined Phase Shifters for Integrated Phased Array Antennas, Invited paper at CASST�2007 Conference on Advances in Space Science and Technology, Bangalore, Jan 29-31, 2007.

Arpan Pal, Subhrakantha Behera and K.J. Vinoy, A New Feed Technique for Microstrip Ring Antennas and its Application in Multi-Ring Multi-band Antennas, Presented at National Symposium on Antennas & Propagation APSYM 2006, Kochi, Dec 14-16, 2006

Dibyant S. Upadhyay, Veeresh G Kasabegoudar, and K.J. Vinoy, A Capacitive Feed Technique for Microstrip Patch Antennas with Ultrawide Bandwidth, Presented at National Symposium on Antennas & Propagation APSYM 2006, Kochi, Dec 14-16, 2006

S.N.M. Banu and K.J. Vinoy, Design of a Diamond Shaped micromachined Waveguide for sub-millimeter wave application, Presented at ISSS National Conference on Smart Structures and MEMS Systems for Aerospace Applications, Hyderabad, Dec 1-2, 2006.

Sumy Jose and K.J. Vinoy, 'Use of Bulk Micromachining for Improving performance of Ku-band Microstrip Antennas on Semiconductor Substrates, Presented at ISSS National Conference on Smart Structures and MEMS Systems for Aerospace Applications, Hyderabad, Dec 1-2, 2006.

Sumy Jose and K.J. Vinoy, Broadband two-element micromachined antenna array with capacitive feed, Presented at International Symposium on Microwaves, ISM 2006, Bangalore, Dec 15-17, 2006.

Sumy Jose and K.J. Vinoy, Design and optimization of broadband micromachined antenna, Presented at IEEE Indicon 2006, New Delhi, Sept 15-17, 2006.

C.Venkatesh, K.J.Vinoy, and N. Bhat, Application of torsional varactor in the design of phase-shifters, Presented at MEMS NANO, Kharagpur, Dec 20-22, 2005

A.V. Sathanur and K.J. Vinoy, A design procedure for micromachined antennas on semiconductor substrates, IEEE Indicon 2005, Madras, Dec. 11-13, 2005.

A.V. Sathanur and K.J. Vinoy, A silicon micromachined photonic band gap cell: Characteristics and an application, Asia Pacific Microwave Conference, Suzhou, PRC, Dec. 4-7, 2005.

V. Koul and K.J. Vinoy, Planar slotted ground structures for miniaturization of microwave circuits, Presented at URSI General Meeting Commission C, New Delhi October 2005.

A.V. Sathanur and K.J. Vinoy, A two element microstrip patch antenna array using  MEMS technology for reduced mutual coupling, Presented at URSI General Meeting Commission C, New Delhi October 2005.

I. Paul and K.J. Vinoy, Algorithm for fast electromagnetic analysis of microwave circuits with multiple interacting sections, Presented at URSI General Meeting Commission C, New Delhi October 2005.

R. S. Kshetrimayum, A. V. Sathanur and K. J. Vinoy, Integration of 2-D PBG patterns in ground and substrate with the enhanced performance, Inter. Symp. Microwaves and Optical Technology, Japan, August 22-25, 2005.

K.J. Vinoy, Micromachined Components for Millimeter- and Sub-millimeter Wave Systems, (Invited Paper) Proceedings of ISSS 2005 International Conference on Smart Materials Structures and Systems, July 28-30, 2005, Bangalore, India.

S.V. Arun, R.S. Khetrimayum, and K.J. Vinoy, Performance enhanced micromachined patch element for monolithic GaAs based active phased array antenna, International Conf. on Antenna Technologies, February 23-24, Ahmedabad, 2005

I. Paul, and K.J. Vinoy, Miniaturized design of a micromachined phase shifter using modified ground coplanar wave guide, APSYM04 Natl. Symp. on Antennas & Propagation, Dec. 21-23, 2004, Cochin, India.

I. Paul, K.J. Vinoy, and S. Mohan, Improved design of a micromachined phase shifter for millimeter wave phased array applications, Presented at Inter. Symp. Microwaves, Sept 1-3, 2004 Bangalore, India.

Prior to 2003

K.J. Vinoy, J. K. Abraham, and V.K. Varadan, Fractal dimension and frequency response of fractal shaped antennas in: IEEE- APS International Symposium, June 22-27, 2003, Columbus, OH, 2003.

J. K. Abraham, K.J. Vinoy, R.A. Tellakula, V. K. Varadan, Experimental Results of Planar Meta Materials, in: IEEE- APS International Symposium, June 22-27, 2003, Columbus, OH, 2003.

H. Yoon, K. J. Vinoy, J. K. Abraham, and V. K. Varadan, CPW phase shifter using barium strontium titanate thin film on silicon substrate, in: IEEE- APS International Symposium, June 22-27, 2003, Columbus, OH, 2003.

J.K. Abraham, R.A. Tellakula, K J Vinoy, Y. Sha, V.K. Varadan, Tailoring the dielectric properties of Meta Materials, in: IEEE- MTT International Symposium, Philadelphia June 8-13, 2003, 2003.

H. Yoon, K. J. Vinoy, J. K. Abraham, and V. K. Varadan, Bilateral interdigital CPW phase shifter using BaSrTiO3 thin Film on poly-Si/Si substrate for steerable antenna architectures, in: SPIE Conf. Smart Electronics & MEMS. San Diego, CA, 3-6 Mar. 2003. Proceedings vol. 5055, 2003.

J. Xie, Y. Sha, K.J. Vinoy, K.A. Jose, and V.K. Varadan, Polymer and carbon nanotube based movable gate on an organic thin film transistor as a potential accelerometer, in: SPIE Conf. Smart Electronics & MEMS. San Diego, CA, 3-6 Mar. 2003. Proceedings vol. 5055, 2003.

R.A. Tellakula, Y. Sha, K.J. Vinoy, K.A. Jose, C. Neo, V.K. Varadan, T.C. Shami, R. Jain, and D. Lal, Carbon nanotubes, fillers, and FSS as potential EM absorbers, in: SPIE Conf. Smart Electronics & MEMS. San Diego, CA, 3-6 Mar. 2003. Proceedings vol. 5055, 2003.

H. Yoon, T. Ji, V.K. Varadan, and K.J. Vinoy, RF MEMS and reconfigurable antennas for communication systems, in: SPIE Conf. MEMS Components and Applications for Industry, Automobiles, Aerospace, and Communication II, San Jose, CA, 25-31 Jan. 2003. Proceedings vol. 4981, 2003.

K.J. Vinoy, K.A. Jose, and V.K. Varadan, Multi-band characteristics and fractal dimension of dipole antennas with Koch curve geometry in: IEEE- APS International Symposium, San Antonio, TX, 2002.

T. Ji, K. J. Vinoy, V. K. Varadan, RF MEMS phase shifters by microstereo lithography on silicon, in: SPIE Conf. Smart Electronics & MEMS. San Diego, CA, 17-21 Mar. 2002. Proceedings vol. 4700, 2002.

Y. Sha, K. J. Vinoy, K. A. Jose, C. Neo, V. K. Varadan, Optimized multilayered graded fractal FSS: micro-genetic algorothm and comparison with experiment, in: SPIE Conf. Smart Electronics & MEMS. San Diego, CA, 17-21 Mar. 2002. Proceedings vol. 4700, 2002.

J. S. Kim, K. J. Vinoy, V. K. Varadan, Wireless health monitoring of cracks in structures with MEMS-IDT sensors, in: SPIE Conf. Smart Electronics & MEMS. San Diego, CA, 17-21 Mar. 2002. Proceedings vol. 4700, 2002.

V. K. Varadan, K. J. Vinoy, V. V. Varadan, RF MEMS and reconfigurable conformal fractal antennas, in: SPIE Conf. Electronics and Structures for MEMS. Adelaide, Australia, 17-19 December 2001. Proceedings vol. 4591, 2001.

K.J. Vinoy, K.A. Jose, V.K. Varadan, and V.V. Varadan, Hilbert curve fractal antennas with reconfigurable characteristics, in: IEEE- MTT International Symposium, Phoenix May 20-25, 2001, Digest, vol, 1, pp. 381-384, 2001.

K.J. Vinoy, K.A. Jose, V.K. Varadan, and V.V. Varadan, Resonant frequency of Hilbert curve fractal antennas, In: IEEE- AP-S International Symposium, Boston, July 8-13, 2001 Digest vol. III, pp. 648-651, 2001.

K.A. Jose, H. Yoon, K.J. Vinoy, P. Sharma, V.K. Varadan, and V.V. Varadan, Low voltage tunable capacitors for RF MEM filters and antenna applications, In: IEEE- AP-S International Symposium, Boston, July 8-13, 2001 vol. III, pp. 670-673, 2001.

K.J. Vinoy, K.A. Jose, V.K. Varadan, and V.V. Varadan, Micromachined systems for RF and microwave antenna applications In: SPIE Conf. Smart Electronics & MEMS. Newport beach, CA, 4-8 Mar. 2001. Proceedings, vol. 4334, 2001

K.J. Vinoy, K.A. Jose, V.K. Varadan, and V.V. Varadan, Optimized multilayered wideband absorbers with graded fractal FSS In: SPIE Conf. Smart Electronics & MEMS. Newport beach, CA, 4-8 Mar. 2001. Proceedings, vol. 4334, 2001

K.J. Vinoy, K.A. Jose, V.K. Varadan, and V.V. Varadan, Small resonant fractal antennas In: SPIE Conf. Smart Electronics & MEMS. Newport beach, CA, 4-8 Mar. 2001. Proceedings, vol. 4334, 2001

H. Yoon, Y. Sha, P. Sharma, K.J. Vinoy, V.K. Varadan, and V.V. Varadan, Performance Improvement of RF MEMS Capacitive Switch with High dielectric constant materials In: SPIE Conf. Smart Electronics & MEMS. Newport beach, CA, 4-8 Mar. 2001. Proceedings, vol. 4334, 2001

V.K. Varadan, K.J. Vinoy, H. Yoon, K.A. Jose, and V.V. Varadan, Application of MEMS in Microwave and Millimeter wave Systems In:  SPIE Conf. on Smart Electronics & MEMS, Melbourne Australia, Dec. 2000, pp. 179-187, 2001.

V.K. Varadan, K.J. Vinoy, and V.V. Varadan, RF MEMS for Reconfigurable Conformal Antennas In:  SPIE Conf. on Smart Electronics & MEMS, Melbourne Australia, Dec. 2000, pp. 194-203, 2001.

K.J. Vinoy, K.A. Jose, and V.K. Varadan, A novel wideband conformal antenna with fractal geometry, Proceedings of APSYM 2000, Dec. 6-8 2000, pp. 28-31, 2000.

K.J. Vinoy, K.A. Jose, and V.K. Varadan, Self similarity and multi-band characteristics of Hilbert curve fractal antennas, Proceedings of APSYM 2000, Dec. 6-8 2000, pp. 36-39, 2000.

V.K. Varadan, K.A. Jose, K.J. Vinoy, and V.V. Varadan, Semiconductor polymer-based RF MEMS and its applications to microwave systems, In: Proceedings of SPIE, vol. 3990, pp. 43-52, 2000.

K.J. Vinoy, K.A. Jose, V.K. Varadan, and V.V. Varadan, Conformal and Reconfigurable fractal antennas, In: Proceedings of SPIE, vol. 3990, pp. 129-137, 2000.

V.K. Varadan, K.J. Vinoy, K.A. Jose, and V.V. Varadan, Conformal fractal antenna and FSS for low-RCS applications, In: Proceedings of SPIE, vol. 3990, pp. 138-145, 2000.

K.J. Vinoy and R.M. Jha, Parallelization strategies for the UTD codes, IEEE Antennas and Propagat. Society, AP-S Intern. Symp., June 18-23, 1995, pp. 1926-1929, 1995.

Technical Reports Top

K.J. Vinoy, S. Jose, and V.K. Lakshmeesha, An Exploratory Study on Micromachined Microstrip Patch Antennas on Semiconductor Substrates, Tech. Rep. No. ISTC 154, 71 p. Indian Institute of Science, Bangalore, March 2006.

K.J. Vinoy and V.K. Lakshmeesha, Design Study of Micromachined Phase Shifters for Integrated Phased Array Antennas, Tech. Rep. No. ISTC 170, 58 p. Indian Institute of Science, Bangalore, March 2007.

K.J. Vinoy, Investigations for Design Rules of Multi-band Antennas using Fractal Geometries, Tech. Rep. No. DSTO/EEC/KJV/576, 110 p. Indian Institute of Science, Bangalore, April 2007.

K.J. Vinoy, Design and Development of Fractal shaped Antennas for 1-18 GHz Operation, Tech. Rep. No. DLRL/EEC/KJV/002, 95 p. Indian Institute of Science, Bangalore, March 2008.

K.J. Vinoy, Design and Development of SPDT RF MEMS Switches, Tech. Rep. No. RCIO/EEC/KJV/001, 42 p. Indian Institute of Science, Bangalore, July 2008.

K.J. Vinoy and R. Islam, Design and Development RF MEMS Switch, Tech. Rep. No. ISTC 188, 48 p. Indian Institute of Science, Bangalore, March 2009.
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GENERAL INFORMATION  Back to TOP

Prospective Faculty Members

Department of Electrical Communication Engineering is open for applications for tenure track Assistant Professor positions in the area of Microwave Engineering / THz systems. Candidates should have an excellent academic background. In particular, we seek candidates with research interest and expertise in (a) Radio frequency/Microwave/mmwave integrated circuits, (b) Terahertz components & systems, (c) Bio-electromagnetics; For other areas of interest to the department please see details here..

For questions, please contact: chair.ece@iisc.ac.in

IISc has an open call for applications system for faculty recruitment whereby applications are invited through the year. Applicants should have a PhD in their area of research, should preferably have 2-3 years postdoctoral research experience, and an outstanding publication record. They should be able to pursue an independent programme of original research and teaching at the post-graduate level.

Applications are peer reviewed in the department and reference letters are obtained. Candidates short-listed from this process are considered by an expert selection committee specially constituted based on candidates available at a given point, and offers are made to selected candidates shortly thereafter. Please contact me with any queries.

Applicants should register at our centralized portal and upload their information using an online form.

Post Doctoral Positions

As part of a new initiative, IISc is offering excellent opportunities for post doctoral research. Please see details here. Email me for the consent letter before applying.

You may contact me through email before applying.

Prospective Students  Back to TOP

IISc offers the best interdisciplinary research environment for graduate research in India. Those with strong motivation for research in areas mentioned above are particularly encouraged to apply online through IISc admissions website when available and alert me by email.

Research admissions are done through interviews held in May/November every year. Please apply for ECE Department if you wish to work in microwave antennas, circuits and other related areas mentioned above. Apart from clear understanding of electromagnetics and microwave theory, appropriate preparation in engineering mathematics topics would be necessary to clear these interviews. Please note that, IISc offers Direct PhD admissions for students with BE/BTech/MSc degree or equivalent with a valid GATE score. Students from CFTI, meeting CGPA requirements may also apply. Those with a Masters degree also do not require a new GATE score to apply.

I can support admission under the external registration program (ERP) for working professionals and quality improvement program (QIP) of academic faculty members. Faculty of AICTE approved Institutes may apply through the Quality Improvement Program (3 years at IISc, funded by AICTE) or External Registration program (1 term at IISc, research work to be carried out at the parent Institute/College, not at IISc). I am also willing to take research candidates through regular admissions.

Typically, admissions are announced in late-January of every year.  Mid-term admissions are announced for PhD programs in late-September.

Prospective Interns 

Short term internships may be considered for 3rd year undergraduate Engineering students with excellent academic track record, enrolled in reputed institutes. No financial support will be provided to these students. Hostel accommodation can not be arranged for these visitors. First or Second year undergraduate students will not be considered.

Masters students enrolled in other institutions may contact for short term internships for their project on topics of interest to our group.

Project Staff Positions  Back to TOP

Project Assistant/Associate Positions: (April 2023) Currently we have a position available. Candidates with (i) digital/embedded circuit design or (ii) Antenna design and evaluation or (iii) python and VHDL programming experience preferred.

Last updated on April 13, 2023