Girish Kumar

girishkumar.jpg

Contact Information

Department of Electrical Engineering
IIT Bombay, Powai
Mumbai 400 076, India
Email : gkumar[AT]ee.iitb.ac.in
Phone (Internal(O)) : (0091 22) - 2576 7436
Phone (Internal(R)) : 7436
Office room no: 336©
Fax: (0091 22) - 25723707

Research Interests

  • Microstrip antennas and arrays, Broadband antennas
  • Microwave integrated circuits
  • EMI/ EMC
  • RF communication circuits.

Courses Offered

Academic Background

  • Ph.D. (Electrical Engineering), I.I.T. Kanpur, India, 1983, C.P.I. = 9.0 / 10.0
    Thesis: Broadband microstrip antennas using coupled resonators
  • B.Sc. (Electrical Engineering), A.M.U. Aligarh, India, 1978, C.P.I. = 9.5 / 10.0, 2nd Rank

Work Experience

  • Professor Elect. Engg. Dept., I.I.T. Bombay, India, Feb. 2001 - present
  • Chairman, Wilcom Technologies Pvt. Ltd., Navi Mumbai, 2006 - 2017
  • Associate Professor Elect. Engg. Dept., I.I.T. Bombay, India, May 1991 – Feb. 2001
  • Assistant Professor Elect. Engg. Dept., Univ. of North Dakota, USA, Aug.1985 - May 1991
  • Research Associate Elect. Engg. Dept., Univ. of Manitoba, Canada, June 1983 – July 1985
  • Research Engineer Elect. Engg. Dept., I.I.T. Kanpur, India, Nov. 1982 - May 1983
  • Senior Research Assist. Elect. Engg. Dept., I.I.T. Kanpur, India, July 1980 - Nov 1982
  • Research Assist. Elect. Engg. Dept., I.I.T. Kanpur, India, July 1979 - June 1980

Research and Development Experience

  • Development of microstrip antennas for land mobile satellite systems, Faculty Research Committee, Univ. of North Dakota, Grand Forks, USA, 1986 - 1987.
  • Design and development of wideband gap-coupled rectangular microstrip antennas, Faculty Research Committee, Univ. of North Dakota, Grand Forks, USA, 1987 - 1988.
  • Frame synchronisation for GOES series satellites, Centre for Atmospheric Sciences, Univ. of North Dakota, Grand Forks, USA, 1988 - 1989.
  • Application of voice recognition and speech synthesis systems, Faculty Research Committee, Univ. of North Dakota, Grand Forks, USA, 1989 - 1990.
  • HRPT frame synchroniser, Centre for Atmospheric Sciences, Univ. of North Dakota, Grand Forks, USA, 1989 - 1990.
  • Computer controlled radiation pattern measurement system, MHRD Institute Project, I.I.T. Bombay, India, 1993 - 1995.
  • Study of MIC tapered slot antenna and its arrays, DRDO, India, 1993 - 1997.
  • Broadband microstrip antennas, AICTE, India, 1997 – 2000 Microstrip antenna array for airborne steerable GPS system, Phase I, ARDB, India, 1999 - 2001.
  • EMI / EMC investigations of lasers and pulsed power sources, BRNS, India, 1999 - 2003.
  • Microstrip antenna array for airborne steerable GPS system, Phase II, ARDB, India, 2002 - 2004.
  • Space Fed Microstrip Antenna Array, Indo Japan Collaboration Project, 2006-2009.
  • Broadband Electromagnetic Energy Harvesting for Low Power Applications – Theory and development including design of CMOS AC to DC converter chip, DST, 2010-2013.

Worked in the broad area of microwaves and antennas. More specifically, worked on the followings:

  • Broadband Microstrip Antennas (MSA) - Proposed and developed several new broadband MSA configurations, such as, gap coupled and directly coupled rectangular MSA, hybrid coupled circular, semi-circular, and triangular MSA, electromagnetic and aperture coupled multilayer MSA.
  • Circularly Polarized MSA - Developed new circularly polarized MSA configurations using modified triangular MSA and off-centered stacked circular MSA.
  • Multi-frequency MSA - Worked on several multi-frequency MSA, such as, stub loaded rectangular and circular MSA, hybrid coupled semi-circular and circular MSA.
  • Compact Microstrip Antennas - Developed compact MSA configurations using shorted variations of rectangular, circular, and triangular MSA.
  • Microstrip Antenna Arrays - Developed phased array MSA for land mobile satellite communication and defence applications.
  • HF Broadband antennas - Designed HF broadband antennas using conical monopole, planar disc monopole, and log-periodic antenna arrays.
  • Educational Trainer Systems- Designed various antennas, impedance matching networks, and microstrip components for Antenna, Transmission Line, and Microstrip Trainer Systems, respectively.
  • Microwave Heating Applications - worked on several microwave industrial applications, such as, moisture content measurement, microwave heating for food and pharmaceutical applications.

Awards and Honours

  • Merit scholarship, Aligarh Muslim University, Aligarh, India, 1973 - 1978
  • Nominated for Outstanding faculty award for excellence in undergraduate teaching, University of North Dakota, Grand Forks, USA, 1987.
  • Received Elwyn F. Chandler award for superior teaching and special commitment to and relationships with undergraduate and graduate students, University of North Dakota, Grand Forks, USA, 1989.
  • My students won first, second, and third prizes in paper competition organised by IEEE Red River Valley Section, USA, in 1989 and 1990 and first and second prizes in 1991.
  • My students won first and consolation prizes in the All India M.V. Chauhan student paper contest organised by IEEE, India Section 1994.
  • Received best paper award in experimental category for “Development of Ka-band microstrip patch array antenna”, at National Communication Conference (NCC-2004), I.I.Sc. Bangalore, India, Jan. 2004
  • Awarded “Profesor Extraordinario” of the Univ. of Navarra, San Sebastian, Spain, 2004.
  • Received best paper award for “Half wavelength double-ridged half height rectangular waveguide resonator”, at ICVCI, Kottayam, Kerala, April 2011.
  • Received best poster award for, “Non radiating edge gap coupled microstrip antennas for 3G Applications”, at ICMARS, Jodhpur, Dec. 2011.
  • Received K. U. Limaye Memorial Best Paper Award for “Electromagnetically coupled dual polarized antenna with high isolation and broad bandwidth”, International Symposium on Microwaves (ISM), Bengaluru, India, Dec. 2012.

Other Responsibilities

  • Reviewer for various national and international journals and conference papers.
  • International Advisory Committee Member of International symposium on Microwave and Optical Technology (ISMOT), 2003.
  • Chairman, IEEE AP/EDS Mumbai Chapter, 2001-2002.
  • Counsellor, IEEE Student Branch at the University of North Dakota, USA, 1987 1991.
  • Secretary and Treasurer, Vice - chairman, Chairman, IEEE Red River Valley Section, USA, 1988 1990, respectively.
  • Campus Representative and Executive Member, ASEE North - Midwest Section, USA, 1989 - 1991.

Professional Memberships

  • Fellow, Institute of Electronics and Telecommunication Engineers (IETE), India
  • Life Member, Indian Society for Technical Education (ISTE), India
  • Member, Institute of Electrical and Electronics Engineers (IEEE), USA

Consultancy Projects

  1. Integrated voltage regulator for brushless synchronous generators, Electric Machinery, Minneapolis, USA, Summer 1989 and Summer 1990.
  2. Data acquisition system for measuring pH and conductivity of soil, Agvise, North Dakota, USA, 1990.
  3. Compact power supply for interactive display, North star, North Dakota, USA, 1991.
  4. Measurements of cable parameters, Procon Cables Pvt. Ltd., Bombay, India, 1993.
  5. Modelling and analysis of Polarimetric SAR antenna, Space Application Centre, Ahmedabad, India, 1994.
  6. Measurement of cable parameters, Airtech, Bombay, India, 1996.
  7. Non-ferromagnetic resonance type small isolator, Hitachi Metals, Japan, 1996 – 1997.
  8. Programmable Logic controller card, Messung Systems, Pune, India, 1997.
  9. Characterisation of surface mount capacitors, SIMIC Electronics, Bombay, India, 1998.
  10. HF broadband antennas, Aero-Marine, Bombay, India, 1998 – 1999.
  11. Microwave heating for pharmaceutical applications, Kleinzaid, Bombay, India, 1998 - 1999
  12. UHF microstrip antennas, ECIL, Hyderabad, India, 1998 - 1999.
  13. Microstrip antenna array for replacing paragrid antennas, ECIL, Hyderabad, India, 1998 – 2000.
  14. Microstrip antennas for WLL and GSM bands, Microqual Techno (P) Ltd., Mumbai, India, 2000.
  15. Design and development of hybrid coupler and scan converter, ECIL, Hyderabad, India, 2000.
  16. Software development and CAD data for microstrip antenna arrays at Ka-Band, DEAL, Dehradun, India, 2000-2002.
  17. Microstrip antenna arrays at X-band, BEL, Bangalore, India, 2001-2002.
  18. Design of antennas for educational training systems, Signet, Mumbai, India, 2002.
  19. Design and development of planar microstrip antenna array for the UHF base station, CRL BEL, Bangalore, India, 2002.
  20. Design of microstrip components for microstrip trainer system, Signet, Mumbai, India, 2003.
  21. Design of transmission line impedance matching devices for transmission line trainer system, Signet, Mumbai, India, 2003.
  22. Testing of patch panel antennas, BSNL, Mumbai, India, 2003.
  23. Design of microstrip circuits and antenna systems, Microwave & Antenna Systems (India) Pvt. Ltd., Navi Mumbai, India, 2003-2004.
  24. Development of S and C band printed antennas, DEAL, Dehradun, India, 2003-2005.
  25. Microwave components, equipment and software, RF Equipment (India) Pvt. Ltd., Navi Mumbai, India, 2004-2005.
  26. Design and development of RFID and WLAN systems, Microwave & Antenna Systems (India) Pvt. Ltd., Navi Mumbai, India, 2004-2005.
  27. Technical opinion on telecommunication transmission equipment, Etco Telecom Ltd., Mumbai, India, 2005.
  28. Antenna Design, Innoviti Embedded Solutions Pvt. Ltd., Bangalore, India, 2005.
  29. Technical advice for inlays for e-passport manufacturing, India Security Press, Nashik, 2007.
  30. Radio Frequency Radiation Study of TV Tower, Worli, I-Ven Realty Limited, Mumbai, 2007.
  31. Studies of the radiation impact of TV tower on residential building, Shree Ram Urban Infrastructure Limited, Worli, 2008.
  32. GPS based Locators for torpedo, NSTL, Visakhapatnam, 2008-2010.
  33. Cell tower radiation report, Telecom Users Group, Delhi, 2010.
  34. Solutions for Radiation emitted through cell phone towers and other devices, BMS Wellness Pvt. Ltd., 2011-2012.
  35. Antenna Testing, Nelco Limited, Mumbai, 2012-2013.
  36. RF Feeder Cable, LS Cable India Pvt. Ltd., Gurgaon, 2013-2014
  37. Design and Development of Smart bag using RF Technology, RF Equipment (India) Pvt. Ltd., Navi Mumbai, 2013-2014.
  38. Design & Development of Ka-Band Monopulse Planar Array Antenna, RCI, Hyderabad, 2014-2017.
  39. Broadband Balun for free-field derivative sensors, RCI, Hyderabad, 2014-2015.
  40. Design & Development of Fuze Setter, Machine Tool Prototype Factory, Ambernath, 2014-2016.
  41. Design & Development of RF Circuit & Antenna for Electronic Fuze for Artillery Ammunition, Machine Tool Prototype Factory, Ambernath, 2014-2017.
  42. Alpha Radiator, Alpha Design Technologies Pvt. Ltd., Bengaluru, 2015-2016
  43. Technical Audit of MW & SW Services of All India Radio for its Reach and Effectiveness, All India Radio, 2015-2016.
  44. Tri-Band Conformal Antenna for Telemetry and Transponder systems, RCI, Hyderabad, 2015-2017.
  45. Design and Development of Antenna – 2.4-2.5 GHz, Telenet Systems Pvt. Ltd., Mumbai, 2017.
  46. Design and Development of RF Filters, Andhra Electronics, Kakinada, 2017-2018.

Sponsored Projects

  1. Development of microstrip antennas for land mobile satellite systems, Faculty Research Committee, Univ. of North Dakota, Grand Forks, USA, 1986 - 1987.
  2. Design and development of wideband gap-coupled rectangular microstrip antennas, Faculty Research Committee, Univ. of North Dakota, Grand Forks, USA, 1987 - 1988.
  3. Frame synchronisation for GOES series satellites, Centre for Atmospheric Sciences, Univ. of North Dakota, Grand Forks, USA, 1988 - 1989.
  4. Application of voice recognition and speech synthesis systems, Faculty Research Committee, Univ. of North Dakota, Grand Forks, USA, 1989 - 1990.
  5. HRPT frame synchroniser, Centre for Atmospheric Sciences, Univ. of North Dakota, Grand Forks, USA, 1989 - 1990.
  6. Computer controlled radiation pattern measurement system, MHRD Institute Project, I.I.T. Bombay, India, 1993 - 1995.
  7. Study of MIC tapered slot antenna and its arrays, DRDO, India, 1993 - 1997.
  8. Broadband microstrip antennas, AICTE, India, 1997 – 2000
  9. Microstrip antenna array for airborne steerable GPS system, Phase I, ARDB, India, 1999 - 2001.
  10. EMI / EMC investigations of lasers and pulsed power sources, BRNS, India, 1999 - 2003.
  11. Microstrip antenna array for airborne steerable GPS system, Phase II, ARDB, India, 2002 - 2003.
  12. Space Fed Microstrip Antenna Array, Indo Japan Collaboration Project, Japan, 2006-2009.
  13. Broadband Electromagnetic Energy Harvesting for Low Power Applications – Theory and development including design of CMOS AC to DC converter chip, DST, India, 2010-2013.
  14. Design of a wideband and low loss 250kW CW RF Coupler for RFQ cavity at 352.2 MHz, BRNS, India, 2011-2013.
  15. Disinfestation of Spices and Nuts using Microwave Energy, DST, India, 2012-2015.
  16. RF Power amplifier design for 4G Applications, DST, India, 2012-2015
  17. Microwave Enhanced Air Heating and Drying Systems for Value Addition of Agro-Based Products Dehydration and Disinfestations, Ministry of Food Processing Industries, India, 2012-2015.
  18. Development of radiation processed flexible rubber based composites for electromagnetic interference shielding applications of mobile phones and mobile towers, BRNS, 2013-2016.
  19. Extraction and Cocentration of Bioactive Compounds and Sugars from Horticultural Processing Waste using Microwave-Membrane Technology, DST, India, 2013-2016.
  20. Dual Band Dual Polarized Multilayered Broadband Microstrip Antenna Array for Satellite Communication, ISRO, India, 2013-2015.
  21. Design and Development of Low Cost Green Anechoic Chamber, ISRO, India, 2015-2016.
  22. Ground Penetrating Radar (GPR) for Landmine (Sub Project of NCETIS, Ministry of Electronics & Information Technology (MeitY), India, 2015-2020.
  23. Design and Development of Low Cost Scalar and Vector Network Analyzers, DST, India, 2016-2019.
  24. Design and Development of Antennas for Communication in TV White Space Frequency Band, MeitY, India, 2018-2019.

List of Patents Filed

  1. M.S. Shojaei, G. Kumar, M. Arrawatia, and V. Diddi, “Self biased high efficiency fully differential RF rectifier”, Indian Patent Application No 470/MUM/2012, Filed on 21 February 2012.
  2. G. Kumar, M.S. Shojaei, and M. Arrawatia, “A Fully Differential Electromagnetically Coupled Microstrip Antenna”, Indian Patent Application No 1258/MUM/2012, Filed on 20 April 2012.
  3. I. Das, G. Kumar, and N.G. Shah, “Simultaneous Dry Blanching and Drying of Button Mushroom using Microwave Enhanced Hot Air Heating System”, Indian Patent Application No. 219/MUM/2013, Filed on 24th January, 2013.
  4. C. Solanki, G. Kumar, and R. Tejwani, “A technique using GSM Voice Channel for Remote Monitoring in Solar Photovoltaic Systems”, Indian Patent Application No. 1959/MUM/2013, Filed on 6th June, 2013.
  5. I. Das, G. Kumar, and N.G. Shah, “Method for Food Processing and Preservation to Improve Storability of Food Grains”, Indian Patent Application No. 549/MUM/2014, Filed on 18th February, 2014.
  6. P. Mathur, G. Kumar, and R. Jyoti, “Higher order mode suppression in single and dual band microstrip antennas”, Provisional Application No. 201621027927 Filed on 16th August, 2016.
  7. G. Kumar and D. Ghosh, “Network analyzer for measuring S-parameters of RF device”, Indian Patent Application No. 201621042495, File No. E-2/127/2017/MUM, Filed on 16 January 2017

List of International Patents Filed

  • G. Kumar and D. Ghosh, “Network analyzer for measuring S-parameters of RF device”, PCT International Application No. PCT/IN2017/050575, Filed on Dec. 7, 2017.

List of Publications

Books Published

  1. G. Kumar and K.P. Ray, “Broadband Microstrip Antennas”, Artech House, USA, 2003
  2. G. Kumar and N. Kumar, “Report on Cell Tower Radiation”, LAP LAMBERT Academic Publishing, Germany, 2016.
  3. D. D. Ozha and G. Kumar, “Vikiran aur Cellphone” (in Hindi), Gyan Vigyan Educare, New Delhi, 2017.
  4. G. Kumar, R. Chopra and H. Kumar, “Antennas – Concept and Design”, 2018. anmlabiitb.github.io/acd

Newsletters Published

  1. G. Kumar, “Cell Phone/Tower Radiation Hazards and Solutions”, Mumbai, July-August 2013
  2. G. Kumar, “Cell Phone/Tower Radiation Hazards and Solutions”, Mumbai, Sep-Oct 2013
  3. G. Kumar, “Cell Phone/Tower Radiation Hazards and Solutions”, Mumbai, April-June 2014

Journal Publications

  1. G. Kumar and K.C. Gupta, “Geometrical tolerance effects in branch - line and rat - race hybrids”, JIETE, vol. 28, pp. 336 - 345, July 1982.
  2. G. Kumar and L. Shafai, “Radiation characteristics and generation of higher order modes of circular microstrip antennas”, Electronic Letters, vol. 20, pp. 681 - 683, Aug. 16, 1984.
  3. G. Kumar and K.C. Gupta, “ Broadband microstrip antennas using additional resonators gap - coupled to the radiating edges”, IEEE Trans. Antennas Propagat., vol. AP - 32, pp. 1375 - 1379, Dec. 1984.
  4. G. Kumar and K.C. Gupta, “Non - radiating edges and four edges gap - coupled multiple resonator broadband microstrip antennas”, IEEE Trans. Antennas Propagat., vol. AP - 33, pp. 173 - 178, Feb. 1985
  5. G. Kumar and K.C. Gupta, “Directly - coupled multiple resonator widedband microstrip antennas”, IEEE Trans Antennas Propagat., vol. AP - 33, pp. 588 - 593, June 1985.
  6. G. Kumar and L. Shafai, “Generation of conical patterns from circular patch antennas and their performances”, Canadian Electrical Engineering Journal, vol. 10, pp. 108 - 112, July 1985.
  7. K. Parasnis, L. Shafai and G. Kumar, “Performance of star microstrip as a linearly and circularly polarised TM21 mode radiator”, Electronic Letters, vol. 22, pp. 463 - 464, April 24, 1986.
  8. V. Rathi, G. Kumar and K.P. Ray, “Improved coupling for aperture coupled microstrip antennas”, IEEE Trans Antennas Propagat., vol. AP - 44, pp. 1196 - 1198, Aug. 1996.
  9. K.P. Ray and G. Kumar, “Multi-frequency and broadband hybrid-coupled circular microstrip antennas”, Electronic Letters, vol. 33, no. 6, pp. 437 - 438, March 13, 1997.
  10. S.K. Satpathy, K.P. Ray, and G. Kumar, “Compact shorted variations of circular microstrip antennas”, Electronic Letters, vol. 34, no. 2, pp. 137 - 138, Jan. 22, 1998.
  11. N.P. Agrawall, G. Kumar, and K.P. Ray, “Wideband planar monopole antennas”, IEEE Trans Antennas Propagat., vol. AP - 46, pp. 249 - 251, Feb. 1998.
  12. S.K. Satpathy, K.P. Ray, and G. Kumar, “Compact shorted variations of triangular microstrip antennas”, Electronics Letters, vol. 34, no. 8, pp. 709-711, April 1998.
  13. K.P. Ray and G. Kumar, “Hybrid coupled planar microstrip antennas”, IETE Technical Review, vol. 16, no.1, pp. 81-84, Jan.-Feb. 1999.
  14. G. Kumar and R.K. Kotapati, “Aperture coupled microstrip antennas”, IETE Technical Review, vol. 16, no.1, pp. 85-88, Jan.-Feb. 1999.
  15. S. Babu and G. Kumar, “Parametric study and temperature sensitivity of microstrip antennas using improved linear transmission line model”, IEEE Trans. Antennas Propagat., vol. 47, pp. 221-226, Feb. 1999.
  16. R. Kapur and G. Kumar, “Hybrid-coupled shorted rectangular microstrip antennas”, Electronics Letters, vol. 35, no. 18, pp. 1501-1502, Sep. 1999.
  17. K.P. Ray and G. Kumar, “Determination of the resonant frequency of microstrip antennas”, Microwave and Optical Tech. Letters, vol. 23, no. 2, pp. 114-117, Oct. 1999.
  18. V. Srinivasan, S. Malhotra and G. Kumar, “Multiport network model for chip resistors loaded rectangular microstrip antennas”, Microwave and Optical Tech. Letters, vol. 24, no. 1, pp. 11-13, Jan. 2000.
  19. V. Srinivasan, K.T.V. Reddy and G. Kumar, “Multiport network model analysis of second and third order modes of rectangular microstrip antennas”, Microwave and Optical Tech. Letters, vol. 26, no. 1, pp. 8-10, July 2000.
  20. K.P. Ray and G. Kumar, “Tuneable and dual band circular microstrip antenna with stubs”, IEEE Trans Antennas Propagat., vol. AP - 48, pp. 1036-1039, July 2000.
  21. K.P. Ray and G. Kumar, “Compact gap-coupled shorted 900 sectoral microstrip antennas for broadband and dual-band operations”, Microwave and Optical Tech. Letters, vol. 26, no. 3, pp. 143-145, Aug. 2000.
  22. K.T.V. Reddy and G. Kumar, “Dual feed gap-coupled square microstrip antennas for broadband circular polarization”, Microwave and Optical Tech. Letters, Sep. 2000.
  23. S. Pandav and G. Kumar, “Modeling of Yagi-Uda antenna using method of moments”, IETE Technical Review, vol. 17, no. 5, pp. 283-291, Sep.-Oct. 2000.
  24. K.P. Ray, P.V. Anob, R. Kapur and G. Kumar, “Broadband planar rectangular monopole antennas”, Microwave and Optical Tech. Letters, vol. 28, no. 1, pp. 55-59, Jan. 2001.
  25. S. Babu and G. Kumar, “Reliability studies of microstrip antennas using Monte Carlo Simulation”, IETE Technical Review, vol. 18, no. 1, pp. 51-56, Jan.-Feb. 2001.
  26. K.P. Ray and G. Kumar, “Multiport network model for fundamental and higher order modes of semi-circular microstrip antennas”, Microwave and Optical Tech. Letters, vol. 28, no. 4, pp. 237-241, Feb. 2001.
  27. S.B. Ray and G. Kumar, “Three port rectangular microstrip unequal power divider and coupler”, Microwave and Optical Tech. Letters, vol. 29, no. 4, pp. 219-223, May 2001.
  28. K.P. Ray and G. Kumar, “Improved method for the prediction of resonance frequency of triangular microstrip antennas”, IETE Journal of Research, vol. 47, nos. 3&4, pp. 161-164, May-Aug. 2001.
  29. S. Pandav and G. Kumar, “Analysis of log periodic dipole array antennas using method of moments”, IETE Journal of Research, vol. 47, no. 5, pp. 247-251, Sep.-Oct. 2001.
  30. K.P. Ray and G. Kumar, “Correction to Tuneable and dual band circular microstrip antenna with stubs”, IEEE Trans Antennas Propagat., vol. AP - 50, p. 552, April 2002.
  31. K.P. Ray, G. Kumar and H.C. Lodwal, “Hybrid-coupled broadband triangular microstrip antennas”, IEEE Trans Antennas Propagat. vol. AP - 51, pp. 139-141, Jan. 2003.
  32. G. Kumar, “Antennas for commercial applications”, Electrical & Electronics, India, pp. 52-56, June 2004.
  33. P. Sarkar, A. Agrawal, and G. Kumar, “Radio Frequency Identification”, Electrical & Electronics, India, pp. 52-56, June 2004.
  34. A. Deshmukh and G. Kumar, “Compact Broadband U-Slot Loaded Rectangular Microstrip Antenna”, Microwave and Optical Tech. Letters, pp. 556-559, Sep. 2005.
  35. A. Deshmukh and G. Kumar, “Compact Broadband E-shaped Microstrip Antennas”, Electronics Letters, Vol. 41, No. 18, pp. 989 – 990, Sep. 2005.
  36. A. Deshmukh and G. Kumar, “Broadband Pairs of Slots Loaded Rectangular Microstrip Antennas”, Microwave and Optical Tech. Letters, pp. 223-226, Nov. 2005.
  37. A. Deshmukh and G. Kumar, “Compact Broadband gap-coupled Shorted L-shaped Microstrip Antennas”, Microwave and Optical Technology Letters, Vol. 47, No. 6, pp. 599 – 605, Dec. 2005.
  38. A. Deshmukh and G. Kumar, “Compact Broadband stacked Microstrip Antennas”, Microwave and Optical Technology Letters, Vol. 48, No. 1, pp. 93 – 96, Jan. 2006.
  39. A. Deshmukh and G. Kumar, “Various slot loaded Broadband and Compact Circular Microstrip Antennas”, Microwave and Optical Technology letters, Vol. 48, No. 3, pp. 435 – 439, March 2006.
  40. A. Deshmukh and G. Kumar, “Compact Broadband S-shaped Microstrip Antennas”, Electronics Letters, Vol. 42, No. 5, pp. 260-261, March 2006.
  41. A. Deshmukh and G. Kumar, “Even mode Multi-port Network Model for slotted dual band Rectangular Microstrip Antennas”, Microwave and Optical Technology letters, Vol. 48, No. 4, pp. 798 – 804, April 2006.
  42. A. Deshmukh and G. Kumar, “Compact Broadband Rectangular Microstrip Antennas”, Microwave and Optical Technology letters, Vol. 48, No. 6, pp. 1043 – 1046, June 2006.
  43. G. Kumar, K. P. Ray, and A. Deshmukh, “Microstrip Antennas Integrated with Horn Antennas”, International Journal of Microwave and Optical Technology (IJMOT), www.ijmot.com, June 2006.
  44. A. Deshmukh and G. Kumar, “Compact Broadband Gap-Coupled Shorted Square Microstrip Antennas”, Microwave and Optical Technology letters, Vol. 48, No. 7, pp. 1261 – 1265, July 2006.
  45. K.P. Ray, G. Kumar and P.V. Anob, “Wideband circular wire mesh and annular ring monopole antennas”, Microwave and Optical Technology letters, Vol. 48, No. 12, pp. 2459-2461, Dec. 2006.
  46. A. Deshmukh and G. Kumar, “Broadband compact V-slot loaded rectangular Microstrip Antennas”, Electronics Letters, Volume 42, pp. 951-952, August 2006.
  47. K.P. Ray, G. Kumar and P.V. Anob, “Wide Band Planar Modified Triangular Monopole Antennas”, Microwave and Optical Technology letters, Vol. 49, No. 3, pp. 628-632, March 2007.
  48. A. Deshmukh and G. Kumar, “Formulation of resonant frequency for Compact Rectangular Microstrip Antennas”, Microwave and Optical Technology letters, Vol. 49, No. 2, pp. 498 – 501, Feb. 2007.
  49. R. K. Gupta, U.C. Sharma, P. Sayanu and G. Kumar, “MEMS based reconfigurable dual band antenna”, Microwave and Optical Technology letters, Vol. 50, No. 6, June 2008.
  50. R. K. Gupta and G. Kumar, “Printed dual band monopole antenna structures for WLAN applications”, Microwave and Optical Technology letters, Vol. 50, No. 10, pp. 2483 – 2487, Oct. 2008.
  51. R. K. Gupta and G. Kumar, “High-gain multilayered antenna for wireless applications”, Microwave and Optical Technology letters, 2008.
  52. R. K. Gupta and G. Kumar, “High-gain multilay 2×2 antenna array for wireless applications”, Microwave and Optical Technology letters, 2008.
  53. R. Bhide and G. Kumar, “Equivalence of space fed microstrip antenna array with horn antenna”, Microwave and Optical Technology letters, May 2010.
  54. R. Bhide and G. Kumar, “Circularly polarized space fed microstrip antenna arrays”, Microwave and Optical Technology letters, 2010.
  55. G. Kumar, “Mobile Phone Radiation Hazard (in Marathi)”, Marathi Vigyan Parishad Magazine, pp. 14-17, July 2010.
  56. R. Bhide and G. Kumar, “”Dual Band Space-Fed Microstrip Antenna Arrays with Orthogonal Polarization”, Microwave and Optical Technology letters, Vol. 53, pp. 793 – 795, April 2011.
  57. G. Kumar, “Viewpoint – Recommendations to reduce carbon footprint, Indian telecom, The Analyst, p. 41, May 2011.
  58. G. Kumar, “Are Cell Phones Injurious to Your Health”, Popular Science, pp. 94-95, Sep. 2011.
  59. D. Unnikrishnan and G. Kumar, “Half wavelength double-ridged half height rectangular waveguide resonator”, International Journal of computer science issues (IJCSI), ICVCI-2011, Vol. 1, pp. 80-84, Nov. 2011.
  60. R. Kumar, P. Singh, D. Unnikrishnan, and G. Kumar, “A tunable waveguide to cavity coupler for high power accelerator cavities”, Nuclear Instruments and Methods in Physics Research A; Vol. 664, pp. 203-213, 2012.
  61. R. Kumar, P. Singh, M.S Bhatia, and G. Kumar, “Analytical Method for coupling calculations of rotated iris coupled resonator cavity”, Progress In Electromagnetics Research B, Vol. 44, pp. 223-239, 2012.
  62. S.B. Ray and G. Kumar, “Isosceles triangular unequal power divider”, Microwave and Optical Technology letters, Vol. 55, pp. 254 – 258, Feb. 2013.
  63. I. Das, G. Kumar and N.G. Shah, “Microwave Heating as an Alternative Quarantine Method for Disinfestation of Stored Food Grains”, International Journal of Food Science, Volume 2013, Article ID 926468, 13 pages, 2013.
  64. G. Kumar and N. Kumar, “Cell Phone/Tower Radiation hazards and Solutions”, Breakthrough - A Journal of Science & Society, Vol. 16, No. 2, pp. 4 – 10, April 2013.
  65. R. Kumar, P. Singh, P. Mathur, and G. Kumar, “Comparative electromagnetic analysis of ridge waveguide transitions for RF power couplers”, Nuclear Instruments and Methods in Physics Research A736, pp. 99–106, Oct. 2013.
  66. I. Das and G. Kumar, " Experimental Investigation on Simultaneous Dry Blanching and Drying of Mushroom Slices Using Microwave Enhanced Hot Air Heating System”, Journal of Food Science and Engineering, Volume 3, pp. 517-524, Oct. 2013.
  67. P.K. Mishra, D. R. Jahagirdar, and G. Kumar, “An Array of Broadband Dual Polarized Electromagnetically Coupled Microstrip Antennas”, Progress In Electromagnetics Research C, Vol. 44, pp. 211-223, Oct. 2013.
  68. G. Joshi, B. K. Sahu, V. Agarwal, and G. Kumar, “Electronic damping of microphonics in superconducting resonators of a continuous wave linac”, Review of Scientific Instruments 85, pp. 026107-1 to 3, Feb. 2014.
  69. I. Das, N.G. Shah and G. Kumar, “Cashew Nut Quality as Influenced by Microwave Heating Used for Stored Grain Insect Control”, International Journal of Food Science, Article ID 516702, 2014.
  70. G. Joshi, P. Singh, V. Agarwal, and G. Kumar, “Digital Self Excited Loop for a superconducting linac”, Nuclear Instruments and Methods in Physics Research A 762 pp. 70–76, June 2014.
  71. D. D. Ozha and G. Kumar, “Jal Chikitsa”, Science India (Hindi), pp. 30-34, July 2014.
  72. G. Kumar and D.D. Ozha, “Cell phone and Radiation”, Avishkar (Hindi), India, pp. 3-8 and 22-23, July 2014.
  73. I. Das, N.G. Shah and G. Kumar, “Properties of Walnut Influenced by Short Time Microwave Treatment for Disinfestation of Insect infestation”, Journal of Stored Product Research, 59: 152-157, 2014.
  74. P. Mathur, M. Chattopadhyay and G. Kumar, “Non-radiating edge gap coupled Capsule- shaped and Nose-shaped Microstrip Antennas for 3G Applications”, International Journal of Future Computer and Communication, 3 (2), pp. 80-83, 2014.
  75. A. Mardikar, R. Mohan, M. Arrawatia, and G. Kumar, “ Planar Monopole Rectangular Antenna with Fractal Stub for Dual Band Applications”, International Journal of Science and Research (IJSR), Vol. 3, Issue 10, pp. 137-141, Oct. 2014.
  76. R. Tejwani, G. Kumar, C.S. Solanki, “Remote Monitoring for Solar Photovoltaic Systems in Rural Application Using GSM Voice Channel”, Energy Procedia volume 57, pp. 1526 – 1535, Dec. 2014, Elsevier (ISSN: 1876-6102).
  77. P. K. Mishra, D. R. Jahagirdar, and G. Kumar, “Broadband dual polarized space-fed antenna arrays with high isolation”, Progress In Electromagnetics Research C, Vol. 55, pp. 105-113, Dec. 2014.
  78. P. K. Mishra, D. R. Jahagirdar and G. Kumar, “A review of broadband dual polarized microstrip antenna designs with high isolation”, IEEE Antennas and Propagation Magazine, Vol. 56, No. 6, pp. 238-251, Dec. 2014.
  79. M. Arrawatia, M. Baghini, and G. Kumar, “Differential Microstrip Antenna for RF Energy Harvesting,” IEEE Trans. Antennas and Propagation, pp. 1581-1588, April 2015.
  80. G. Joshi, P.D. Motiwala, G.D. Randale, P. Singh, V. Agarwal, and G. Kumar, “An offset tone based gain stabilization technique for mixed-signal RF measurement systems”, Nuclear Instruments and Methods in Physics Research A 762 pp. 1–10, June 2015.
  81. D. Ghosh and G. Kumar, “High Isolation Dual Three Branch Microstrip Couplers”, IJMOT, vol.10, No.6, pp. 391-396, Nov. 2015.
  82. M. Arrawatia, M. Baghini, and G. Kumar, “Broadband Bent Triangular Omnidirectional Antenna for RF Energy Harvesting”, IEEE Antennas and Wireless Propagation Letters, vol. 15, pp. 36-39, Feb. 2016.
  83. P. Mathur, G. Kumar, and R. Jyoti, “Dual Band Dual Polarised Antenna at S and X Bands with Novel Higher Order Mode Suppression Technique”, Compendium of Research, SAC Ahmedabad, pp. 313-317, April 2016.
  84. R. Tejwani, G. Kumar and C.S. Solanki, “Remote monitoring of solar PV system for rural areas using GSM, V-F & F-V converters”, Journal of Instrumentation, volume 11, pp. 1-13, May 2016.
  85. A. Shukla, I. Das, G. Kumar, R. Varghese, and A. Majumdar, “Effect of 2.45 GHz on rat using microwave oven integrated with horn antenna”, International Journal for Exchange of Knowledge (IJEK), pp. 1-8, Vol. 3, No. 1, July 2016.
  86. A. Majumdar, R. Varghese, A. Shukla, M. Arrawatia, and G. Kumar, “Anxiety response in rats exposed to 900 MHz non-ionizing radiation”, International Journal for Exchange of Knowledge (IJEK), pp. 9-19, Vol. 3, No. 1, July 2016.
  87. D. Ghosh and G. Kumar, “A Broadband, Partially Unilateral Active Testset for Network Analyzer”, Electronics Letters, vol. 52, no. 14, pp. 1266-1268, 2016.
  88. D. Ghosh and G. Kumar, “A Broadband Active Quasi Circulator for UHF and L Band Applications”, IEEE Microwave and Wireless Components Letters, Vol. 26, No. 8, pp. 601-603, Aug. 2016
  89. D. Ghosh and G. Kumar, “Six port reflectometer using edge-coupled microstrip couplers,” IEEE Microwave and Wireless Components Letters, Vol. 27, No. 3, pp. 245-247, 2017.
  90. P. Mathur and G. Kumar, “Improved performance of Microstrip Antenna Arrays through Electromagnetic Coupling (EMCP) at Ka-band”, FERMAT, vol. 21, Communications 11, May-June, 2017. (ISSN 2470-4202)
  91. H. Kumar and G. Kumar, “Coaxial Feed Pyramidal Horn Antenna with High Efficiency“, IETE Journal of Research, pp. 1-8, May 2017.
  92. H. Kumar, M. Arrawatia and G. Kumar, “Broadband planar Log-periodic Dipole Array Antenna based RF Energy Harvesting System”, IETE Journal of Research 2017.
  93. P. Mathur and G. Kumar, “Antenna at S-and X-band for array at X-band in dual frequency antenna”, Progress in Electromagnetic Research Letters (PIER-L), Vol.71, pp.15-22, 2017.
  94. R. Varghesea, A. Majumdar, G. Kumar, and A. Shukla, “Rats exposed to 2.45 GHz of non-ionizing radiation exhibit behavioral changes with increased brain expression of apoptotic caspase 3”, Pathophysiology, pp.1-12, Nov. 2017.
  95. H. Kumar and G. Kumar, “A Broadband Planar Modified Quasi-Yagi Using Log-Periodic Antenna”, Progress in Electromagnetic Research Letters, Vol.73, pp.23-30, 2018.
  96. H. Kumar and G. Kumar, “Monopulse Comparators Using Branch Line and Ratrace Couplers for Monopulse Tracking”, IEEE Microwave Magazine 2018.

Papers in conference proceedings

  1. G. Kumar and K.C. Gupta, “Trapezoidal shaped microstrip antennas for wider bandwidth and beamwidth”, Int. conf. on communication and circuit systems, Calcutta, India, p. 7, Dec. 1981.
  2. G. Kumar and K.C. Gupta, “Gap - coupled microstrip antennas”, Int. Symp. on microwave and communication, Kharagpur, India, pp. 12 - 15, Dec 1981.
  3. G. Kumar and K.C. Gupta, “Broadband microstrip antennas using coupled resonators”, IEEE AP - S Int. Symp. Digest, pp. 67 - 70, May 1983.
  4. G. Kumar, L. Shafai, A. Ittipiboon and E. Bridges, “Characteristics of higher order modes of circular microstrip antennas”, IEEE AP - S Int. Symp. Digest, pp. 573 - 576, June 1984.
  5. G. Kumar, L. Shafai and G.B. Neilson, “Antenna technology for land mobile satellite communication”, Miconex Symp. Digest, Winnipeg, Canada, May 1985.
  6. K. Parasnis, G. Kumar and L. Shafai, “A new microstrip antennas for generation of higher order modes”, IEEE AP – S Int. Symp. Digest, pp. 79 - 82, June 1985.
  7. G. Kumar and L. Shafai, “Microstrip phased array antennas for mobile satellite communication”, IEEE AP - S Int. Symp. Digest, pp. 719 - 722, June 1985.
  8. G. Kumar and L. Shafai, “Multifed technique to generate any higher order mode of circular microstrip antennas”, Proc. of North Dakota Academy of Science, vol. 40, p. 10, April 1986.
  9. B. Rawat, G.R. Babu and G. Kumar, “A study of biomedical effects using electromagnetic field concept”, Proc. of North Dakota Academy of Science, vol. 41, p. 22, April 1987.
  10. B. Rawat and G. Kumar, “Scattering matrix analysis of inverted strip dielectric waveguides”, IEEE Infrared and Millimetre wave Int. Conf. Digest, pp. 168 - 169, Dec. 1987.
  11. G. Kumar, T. Hapy and J. Maalouf, “Voice - controlled video - display system”, Proc. of North Dakota Academy of Science, vol. 42, p. 52, April 1988.
  12. G. Kumar, “Emphasis of creativity in the under graduate engineering education”, Supplement of Proc. of ASEE North - Midwest section Annual Meeting, Oct. 1988.
  13. T. Gerber, K. Guillaume and G. Kumar, “Appliance timer using digital clock module”, Proc. of North Dakota Academy of Science, vol. 43, p. 91, April 1989.
  14. P. Zabinsky and G. Kumar, “Data Acquisition for GOES series satellites”, Proc. of North Dakota Academy of Science, vol. 43, p. 110, April 1989.
  15. D. Quack, J. Salls, and G. Kumar, “Infrared deer detector and time recorder”, Proc. of North Dakota Academy of Science, vol. 44, p. 113, April 1990.
  16. J. Sloan, M. Hennes and G. Kumar, “12 Channel fibre optic data link”, Proc. of North Dakota Academy of Science, vol. 44, p. 115, April 1990.
  17. C. Kohl and G. Kumar, “Microprocessor based remote well depth recording system”, Proc. of North Dakota Academy of Science, vol. 44, p. 100, April 1990.
  18. D. Rogers and G. Kumar, “Design links engineering education with industry and community”, Proc. of North Dakota Academy of Science, vol. 44, p. 28, April 1990.
  19. G. Kumar, “Innovative electronic design techniques leading towards research and economic development”, Proc. of North Dakota Academy of Science, vol. 44, p. 35, April 1990.
  20. G. Kumar, D. Mathsen and A. Fletcher, “Planning for engineering education in 2000”, Proc. of Frontiers in education, Vienna, Austria, July 1990.
  21. G. Kumar, “Teaching electronics design can be rewarding”, Proc. of ASEE North - Midwest section Annual Meeting, pp. 6.12 - 6.16 Oct. 1990.
  22. M.H. Kostepen and G. Kumar, “Speech recognition using back propagation neural networks”, Proc. of IEEE TENCON’ 91, New Delhi, vol. II, pp. 144 - 148, Aug. 1991.
  23. G. Joshi, B.R. Bahiri, and G. Kumar, “Development of resonator controller for the super - conducting linear accelerator”, Symp. on Advanced Instrumentation for Nuclear Research, BARC, Bombay, pp. G2.1 - G2.9, Jan. 1993.
  24. M.B. Nile and G. Kumar, “Analysis of circular sectors using Green’s function and segmentation method”, IEEE AP - S Symp. Digest, pp. 170 - 173, June 1994.
  25. A.A. Rasheed and G. Kumar, “Single feed circularly polarised modified triangular microstrip antennas”, IEEE AP - S Symp. Digest, pp. 818 - 821, June 1994.
  26. M.B. Nile, A.A. Rasheed and G. Kumar, “Broadband gap - coupled semi - circular and triangular microstrip antennas”, IEEE AP - S Symp. Digest, pp. 1202 - 1205, June 1994.
  27. R. K. Singh and G. Kumar, “Edge - coupled and multilayered circular microstrip antennas”, 26th midterm symp. on microwaves and millimetre waves - Recent trends, DEAL, Dehradun, India, April 1995.
  28. A.E. Daniel and G. Kumar, “Rectangular microstrip antenna with stub along the non radiating edge for dual band operation”, IEEE AP - S Symp. Digest, pp. 2136 - 2139, June 1995.
  29. A.E. Daniel and G. Kumar, “Dual and triple frequency stub loaded rectangular microstrip antenna”, IEEE AP - S Symp. Digest, pp. 2140 - 2143, June 1995.
  30. R.K. Singh and G. Kumar, “Broadband parasitically coupled circular microstrip antennas”, ISRAMT 95, Kiev, Ukraine, Sep. 1995.
  31. A.E. Daniel and G. Kumar, “Multiport network model for tuneable rectangular microstrip antennas”, Proc. NSAML, New Delhi, pp. 572-577, Dec. 1995.
  32. R. Kakkar and G. Kumar, “Broadband microstrip log - periodic antennas”, Proc. NSAML, New Delhi, pp. 578-583, Dec. 1995.
  33. A. K. Singh and G. Kumar, “Microstrip feed for reflector antenna used in satellite receiver in C – Band”, Proc. NSAML, New Delhi, pp. 645-650, Dec. 1995.
  34. A. Goel and G. Kumar, “Reduced height antennas for mobile communication”, Proc. NCC, Bombay, pp. 32-35, Feb. 1996.
  35. R. Kakkar and G. Kumar, “Stagger tuned microstrip log-periodic antenna”, IEEE AP - S Symp. Digest, pp. 1262 - 1265, June 1996.
  36. A. K. Singh and G. Kumar, “EMCP microstrip antennas as feed for satellite receiver”, IEEE AP - S Symp. Digest, pp. 1274 - 1277, June 1996.
  37. R. K. Kotapati and G. Kumar, “Wideband aperture coupled microstrip antennas”, Proc. APSYM-CUSAT-96, Kochi, pp. 86-89, Nov. 1996.
  38. K.P. Ray, G. Kumar and S.H. Damle, “Direct coupled wideband and dual band semi-circular microstrip antennas”, Proc. APMC’96, N. Delhi, pp. 425-428, Dec. 1996.
  39. N.P. Agrawall, K.P. Ray, G. Kumar, G.S. Isola, and R.S. Parolia, “Broadband circular and elliptical monopole antennas”, Proc. APMC’96, N. Delhi, pp. 749-752, Dec. 1996.
  40. N.P. Agrawall, G. Kumar, and K.P. Ray, “New wideband monopole antennas” IEEE AP - S Symp. Digest, pp. 248-251, July 1997.
  41. S. Babu, I. Singh, and G. Kumar, “Improved linear transmission line model for rectangular, circular and triangular microstrip antennas”, IEEE AP - S Symp. Digest, pp. 614-617, July 1997.
  42. S.K. Satpathy, K.P. Ray, and G. Kumar, “Compact microstrip antenna using a single shorting post”, NSAML, New Delhi, pp. 69-72, March 1998.
  43. V. Srinivasan and G. Kumar, “Multiport network model for dual frequency shorted rectangular microstrip antennas”, NSAML, New Delhi, pp. 73-76, March 1998.
  44. B. Balakrishnan and G. Kumar, “Electromagnetic coupled circular microstrip antennas for broadband, dual frequency and circular polarisation”, NSAML, New Delhi, pp. 77-80, March 1998.
  45. N.K. Parhi and G. Kumar, “Moisture content measurement in liquids and solids using microstrip antennas”, NSAML, New Delhi, pp. 253-256, March 1998.
  46. B. Balakrishnan and G. Kumar, “Dual band circularly polarized off-centered EMCP antennas”, IEEE AP-S Symp. Digest, pp. 316-319, June 1998.
  47. B. Balakrishnan and G. Kumar, “Wideband and high gain electromagnetically coupled circular microstrip antennas”, IEEE AP-S Symp. Digest, pp. 1112-1115, June 1998.
  48. K.P. Ray and G. Kumar, “Stub loaded microstrip antenna”, Proc. APSYM-CUSAT-98, Kochi, pp. 84-87, Dec. 1998.
  49. V. Srinivasan, R. Kapur, and G. Kumar, “MNM for compact dual frequency rectangular microstrip antenna”, Proc. APSYM-CUSAT-98, Kochi, pp. 88-91, Dec. 1998.
  50. S.K. Satpathy, V. Srinivasan, K.P. Ray and G. Kumar, “Compact microstrip antennas for personal mobile communication”, IEEE TENCON-98, N. Delhi, pp. 245-248, Dec. 1998.
  51. K.T.V. Reddy, V. Srinivasan, and G. Kumar, “Higher order modes of rectangular microstrip antenna”, Proc. NCC-99, I.I.T. Kharagpur, pp. 767-772, Jan. 1999.
  52. V. Srinivasan, R. Kapur, S.K. Satpathy, and G. Kumar, “Multiport network model for C-shaped microstrip antenna”, Proc. NCC-99, I.I.T. Kharagpur, pp. 741-746, Jan. 1999.
  53. R. Kapur and G. Kumar, “Hybrid-coupled shorted rectangular microstrip antennas”, IEEE AP-S Symp. Digest, July 1999.
  54. K. P. Ray and G. Kumar, “Circular microstrip antenna with double stubs”, Proc. ISRAMT 99, Malaga, Spain, pp. 381-384, Dec. 1999.
  55. K.P. Ray, G. Kumar and S.H.Damle, “Improved method for calculating the resonant frequency of microstrip antennas”, Proc. ISRAMT 99, Malaga, Spain, pp. 515-518, Dec. 1999.
  56. V. Srinivasan, R. Kapur, and G. Kumar, “Analysis of C-microstrip antennas using MNM”, Proc. ISRAMT 99, Malaga, Spain, pp. 671-675, Dec. 1999.
  57. V. Srinivasan, K.T.V. Reddy, and G. Kumar, “MNM for analysing second and third order modes of rectangular microstrip antenna”, Proc. ISRAMT 99, Malaga, Spain, pp. 688-691, Dec. 1999.
  58. K. P. Ray and G. Kumar, “Broadband and dual-frequency gap coupled compact 900 sectoral microstrip antenna”, Proc. Radar Symp., Bangalore, India, pp. 88-94, Dec. 1999.
  59. V. Srinivasan, K. P. Ray and G. Kumar, “Dual polarized microstrip antennas”, Proc. Radar Symp., Bangalore, India, Dec. 1999.
  60. A. Deshmukh and G. Kumar, “Broadband compact microstrip antennas”, Proc. Radar Symp., Bangalore, India, Dec. 1999.
  61. S. Pandav and G. Kumar, “Analysis of Yagi-Uda antenna using Method of Moments”, Proc. NCC-2000, I.I.T. Delhi, India, pp. 45-48, Jan. 2000.
  62. A. Deshmukh and G. Kumar, “Shorted compact broadband microstrip antennas”, Proc. NCC-2000, I.I.T. Delhi, India, pp. 49-52, Jan. 2000.
  63. K.T.V. Reddy and G. Kumar, “Broadband circularly polarized square microstrip antennas”, Proc. IETE Symp., ETI-2000, Navi Mumbai, India, pp. 16-21, March 2000.
  64. G. Kumar, “Broadband microstrip antennas”, Proc. NSAML-2000, Delhi, India, March 2000.
  65. M. Datta and G. Kumar, “Planar gap-coupled circular microstrip antennas using two different substrates ”, Proc. NSAML-2000, Delhi, India, March 2000.
  66. V. Srinivasan, K. P. Ray and G. Kumar, “Orthogonal polarised microstrip antennas”, Proc. NSAML-2000, Delhi, India, March 2000.
  67. M. Datta and G. Kumar, “Broadband gap-coupled circular microstrip antennas”, IEEE AP-S Symp. Digest, pp. 1418-1421, July 2000.
  68. A. Deshmukh and G. Kumar, “Hybrid coupled compact variations of rectangular microstrip antennas”, IEEE AP-S Symp. Digest, pp. 1422-1425, July 2000.
  69. K.T.V. Reddy and G. Kumar, “Stacked circular microstrip antennas for wideband circular polarization”, Proc. APSYM-CUSAT-2000, Kochi, India, pp. 47-50, Dec. 2000.
  70. M. Datta, R. Mohan, and G. Kumar, “Three gap-coupled triangular microstrip antennas”, Proc. APSYM-CUSAT-2000, Kochi, India, pp. 51-54, Dec. 2000.
  71. S.B. Ray and G. Kumar, “Two way rectangular microstrip unequal power divider”, Proc. APSYM-CUSAT-2000, Kochi, India, pp. 156-159, Dec. 2000.
  72. P.V. Anob, K.P. Ray, G. Kumar, M.S. Bhatia, and V.K. Madan, “Circular mesh monopole antennas for EMI/EMC applications”, Proc. APSYM-CUSAT-2000, Kochi, India, pp. 346-349, Dec. 2000.
  73. K.T.V. Reddy and G. Kumar, “Gap-coupled broadband circularly polarized square microstrip antennas”, ICCD-2000, I.I.T. Kharagpur, India, pp. 365-368, Dec. 2000.
  74. K.T.V. Reddy and G. Kumar, “Compact square ring microstrip antennas for circular polarization”, ELECTRO-2001, BHU, Varanasi, India, pp. 46-49, Jan. 2001.
  75. K.P. Ray, V. Srinivasan, S. Satpathy, and G. Kumar, “Investigations on shorted rectangular microstrip antennas, ELECTRO-2001, BHU, Varanasi, India, pp. 153-156, Jan. 2001.
  76. K.T.V. Reddy and G. Kumar, “Compact circularly polarized microstrip antennas for wireless application”, Seminar on Wireless Multimedia Communication, IETE, Mumbai, India, pp. 6B.1.1-6B.1.5, Feb. 2001.
  77. A. Deshmukh and G. Kumar, “Compact broadband gap-coupled corner shorted microstrip antennas”, ISMOT 2001, Montreal, Canada, pp. 165-168, June 2001.
  78. P.V. Anob and G. Kumar, “Wideband modified triangular monopole antennas”, ISMOT 2001, Montreal, Canada, pp. 169-172, June 2001
  79. S.B. Ray and G. Kumar, “Microstrip cross-over junctions with square configuration”, ISMOT 2001, Montreal, Canada, pp. 487-490, June 2001.
  80. A. Deshmukh and G. Kumar, “Compact broadband gap-coupled shorted L-shaped microstrip antennas”, IEEE AP-S Symp. Digest, vol. 1, pp. 106-109, July 2001.
  81. P.V. Anob, K.P. Ray, and G. Kumar, “Wideband orthogonal square monopole antennas with semi-circular base”, IEEE AP-S Symp. Digest, vol. 3, pp. 294-297, July 2001.
  82. K.T.V. Reddy and G. Kumar, “Stacked microstrip antennas for broadband circular polarization”, IEEE AP-S Symp. Digest, vol. 3, pp. 420-423, July 2001.
  83. G. Kumar and K.P. Ray, “Stacked gap-coupled multi-resonator rectangular microstrip antennas”, IEEE AP-S Symp. Digest, vol. 3, pp. 514-517, July 2001.
  84. A.E. Daniel and G. Kumar, “Tunable multi-band rectangular microstrip antenna with two equal stubs”, MICROWAVE-2001, Jaipur, India, pp. 7-10, Nov. 2001.
  85. A. Deshmukh and G. Kumar, “Compact broadband C and W shaped gap-coupled microstrip antennas”, MICROWAVE-2001, Jaipur, India, pp. 7-10, Nov. 2001.
  86. S.B. Ray, J.R. Deoghare and G. Kumar, “Semi-circular microstrip unequal and equal power divider”, MICROWAVE-2001, Jaipur, India, pp. 41-44, Nov. 2001.
  87. K.T.V. Reddy and G. Kumar, “Sequentially rotated nearly square microstrip antennas for broadband circular polarization”, MICROWAVE-2001, Jaipur, India, pp. 134-137, Nov. 2001.
  88. K.T.V. Reddy and G. Kumar, “Planar gap-coupled circular microstrip antennas for wideband circular polarization”, International Radar Symposium India-2001, Bangalore, India, pp. 415-421, Dec. 2001.
  89. A. Deshmukh and G. Kumar, “Compact broadband gap-coupled square ring and W-shaped microstrip antennas”, International Radar Symposium India-2001, Bangalore, India, pp. 853-861, Dec. 2001.
  90. K.T.V. Reddy, G. Kumar and K.P. Ray, “Reliability of dual feed circularly polarized square microstrip antennas”, International Conference on Quality, Reliability and Control, Mumbai, India, pp. R61.1-R61.4, Dec. 2001.
  91. A.E. Daniel, G. Kumar and K.P. Ray, “Reliability of electromagnetically coupled rectangular microstrip antennas”, International Conference on Quality, Reliability and Control, Mumbai, India, pp. R62.1-R62.4, Dec. 2001.
  92. A. Deshmukh and G. Kumar, “Reliability of suspended rectangular microstrip antennas”, International Conference on Quality, Reliability and Control, Mumbai, India, pp. R63.1-R63.4, Dec. 2001.
  93. A. Deshmukh and G. Kumar, “Compact broadband gap-coupled center shorted rectangular microstrip antennas”, National Conference on Communications-2002, IIT Bombay, India, pp. 214-218, Jan. 2002.
  94. S.B. Ray and G. Kumar, “Microstrip circular disc and ring cross-over junctions”, National Conference on Communications -2002, IIT Bombay, India, pp. 270-274, Jan. 2002.
  95. M.S. Bhatia and G. Kumar, “On the EMI potential of various laser types”, Proc. International Conference on Electromagnetic Interference and Compatibility, Bangalore, India, pp. 3-5, Feb. 2002.
  96. M.S. Bhatia, V.K. Madan, A.S. Dongare, R. Phulluke, G. Kumar and V. Agarwal, “Mapping of radiation field from a discharge laser head”, Proc. International Conference on Electromagnetic Interference and Compatibility, Bangalore, India, pp. 6-10, Feb. 2002.
  97. R. Phulluke, V. Agarwal, G. Kumar, M.S. Bhatia, V.K. Madan, and A.S. Dongare, “Conducted EMI issue and design of EMI filters for AC power supply feeding a copper vapour type laser”, Proc. International Conference on Electromagnetic Interference and Compatibility, Bangalore, India, pp. 267-271, Feb. 2002.
  98. A. Deshmukh and G. Kumar, “Compact broadband C-shaped stacked microstrip antennas”, IEEE AP-S Symp. Digest, June 2002.
  99. A. Deshmukh and G. Kumar, “Compact rectangular microstrip antenna for conical radiation pattern”, IEEE AP-S Symp. Digest, June 2002.
  100. S.B. Ray and G. Kumar, “Design of 2-way equal power dividers using lumped elements”, Proc. APSYM-CUSAT-2002, Kochi, India, pp. 159-162, Dec. 2002.
  101. G. Kumar and K.P. Ray, “Suspended multilayer multi-resonator rectangular microstrip antennas”, Proc. APSYM-CUSAT-2002, Kochi, India, pp. 225-228, Dec. 2002.
  102. A. Deshmukh and G. Kumar, “Compact broadband S-shaped stacked Microstrip Antennas”, Proc. APSYM-CUSAT-2002, Kochi, India, pp. 229-232, Dec. 2002.
  103. A.E. Daniel and G. Kumar, “Slot loaded rectangular microstrip antenna for tunable dual band operation”, Proc. APSYM-CUSAT-2002, Kochi, India, pp. 233-236, Dec. 2002.
  104. S.B. Ray and G. Kumar, “Compact rectangular ring unequal power divider”, International MTT Symposium, June 2003.
  105. S.B. Ray and G. Kumar, “Suspended four feed square microstrip antenna for broadband circular polarization”, AP-S Symp. Digest, pp. 284-287, June 2003.
  106. A. Deshmukh and G. Kumar, “Compact broadband shorted square microstrip antenna”, IEEE AP-S Symp. Digest, pp. 872-875, June 2003.
  107. A. Deshmukh and G. Kumar, “Half U-slot loaded rectangular microstrip antenna”, IEEE AP-S Symp. Digest, pp. 876-879, June 2003.
  108. A. Deshmukh and G. Kumar, “Broadband rectangular microstrip antenna with pairs of slots”, ISMOT, Ostrava, Czech Republic, August 2003.
  109. S.B. Ray and G. Kumar, “Broadband suspended dual feed microstrip antenna with feed network”, ISMOT, Ostrava, Czech Republic, August 2003.
  110. Soma B. Maran, V K Singh, Virpal Singh, R.P. Dixit, Sudhabindu Ray, and Girish Kumar, “Development of Ka-band microstrip patch array antenna”, National Communication Conference (NCC-2004), I.I.Sc. Bangalore, India, Jan. 2004.
  111. A. Deshmukh and G. Kumar, “Even mode multi-port network model for dual band rectangular microstrip antennas”, Proc. APSYM-CUSAT-2004, Kochi, India, Dec. 2004.
  112. P. Chine and G. Kumar, “Space fed microstrip antenna array”, Proc. ICAT-2005, Ahmedabad, India, pp. 119-122, Feb. 2005.
  113. A. Deshmukh and G. Kumar, “Compact E and S-shaped microstrip antennas”, IEEE AP-S Symp. Digest, Washington, USA, pp. 297-300, July 2005.
  114. A. Deshmukh and G. Kumar, “Compact and broadband rectangular microstrip antenna using stepped U or V-slot”, IEEE AP-S Symp. Digest, Washington, USA, pp. 389-392, July 2005.
  115. P. Chine and G. Kumar, “Three dimensional, efficient, directive microstrip antenna array”, IEEE AP-S Symp. Digest, Washington, USA, July 2005.
  116. A. Deshmukh and G. Kumar, “Broadband L-probe fed rectangular microstrip antenna”, ISMOT, Japan, pp. 394 – 397, August 2005.
  117. P. Chine and G. Kumar, “Circularly polarized space fed microstrip antenna array”, ISMOT, Japan, pp. 398-401, August 2005.
  118. A. Deshmukh and G. Kumar, “Formulation of Resonant Frequency for Compact Microstrip Antennas”, IEEE AP-S Symp. Digest, pg. 1981 – 1984, New Mexico, USA, July 2006.
  119. A. Deshmukh and G. Kumar, “Compact Broadband Stacked Microstrip Antennas”, IEEE AP-S Symp. Digest, pp. 3747 – 3750, New Mexico, USA, July 2006.
  120. S.K. Das, R. Gupta, and G. Kumar, “Dual-Band Planar Monopole Antenna”, IEEE AP-S Symp. Digest, New Mexico, USA, July 2006.
  121. A. Deshmukh and G. Kumar, “Modified U-slot loaded Rectangular Microstrip Antennas”, Proc. APSYM-CUSAT-2004, Kochi, India, pp. 51 – 54, Dec. 2006.
  122. A. Deshmukh and G. Kumar, “Broadband Equilateral Triangular Microstrip Antennas”, Proc. APSYM-CUSAT-2004, Kochi, India, pp. 217 – 220, Dec. 2006.
  123. A. Deshmukh and G. Kumar, “Broadband Slotted Rectangular Microstrip Antennas”, National Conference on Information and Communication Technology (NCICT), Mumbai, March 2007.
  124. A. Kundu and G. Kumar, “Low cost implementation of GPR for landmine detection”, National Conference on Communications-2008, IIT Bombay, India, Jan. 2008.
  125. M. M. Mhala, P. Desai and G. Kumar, “Broadband impedance matching network for RF power amplifier”, National Conference on Communications-2008, IIT Bombay, India, Jan. 2008.
  126. Gopal Joshi, P. Singh, Girish Kumar and Vivek Agarwal, “Resonant Frequency Tracking System”, Indian Particle Accelerator Conference, Indore, Feb. 10-13, 2009
  127. G. Joshi, M. Vretenar, G. Kumar, and V. Agarwal, “Development of RF System Model for one Resonator fed with two Amplifiers”, Particle Accelerator Conference (PAC) 2009, Vancouver, Canada, May 2009.
  128. G. Joshi, G. Kumar, R. G. Pillay, and V. Agarwal, “Development of the Model of a Self-Excited Loop”, Particle Accelerator Conference (PAC) 2009, Vancouver, Canada, May 2009.
  129. R. S. Kashyap and G. Kumar, “Dualband microstrip bandpass filters with narrow passbands and good in-between rejection”, ISMOT, Delhi, India, pp. 76-77, Dec. 2009.
  130. R. S. Kashyap and G. Kumar, “Coupled line bandpass filter with attenuation poles for UWB applications”, ISMOT, Delhi, India, pp. 78-79, Dec. 2009.
  131. G. Kumar and R. Bhide, “Space fed microstrip antenna arrays”, ISMOT, Delhi, India, pp. 392-393, Dec. 2009.
  132. N. Kumar and G. Kumar, “Biological effects of cell tower radiation on human body”, ISMOT, Delhi, India, pp. 678-679, Dec. 2009.
  133. G. Joshi, Sujo C.I., P.D. Motiwala, P. Singh, G. Kumar and V. Agarwal, “RF Control Electronics for 400keV RFQ”, National Symposium on Nuclear Instrumentation, NSNI-10, Mumbai, India, pp. 160-164, Feb. 24-26, 2010.
  134. G. Joshi, G. Kumar and V. Agarwal, “Development of Digital Self Excited Loop”, National Symposium on Nuclear Instrumentation, NSNI-10, Mumbai, India, pp. 195-198, Feb. 24-26, 2010.
  135. M. Arrawatia, M. S. Baghini, and G. Kumar, “RF Energy Harvesting System at 2.67GHz and 5.8GHz”, Proc. APMC, Japan, pp.900-903, Dec. 2010.
  136. M. Arrawatia, M. S. Baghini, and G. Kumar, “RF Energy Harvesting System from Cell Towers in 900MHz Band”, NCC2011, Bangalore, India, pp.1-5, Jan. 2011.
  137. G. Kumar, D. Unnikrishnan, , V. R. Bala, M. Pande, and V. K. Handu, “Tunable waveguide  WR2300 to N-type coaxial adapter”, INPAC2011, Delhi, India, Feb. 2011.
  138. V. R. Bala, J. K. Mishra, M. Pande, V. K. Handu, G. Kumar, and J. Mukherjee, “Analysis and Design of High Power Solid-state Module at 350 MHz for RF Accelerator”, INPAC2011, Delhi, India, Feb. 2011.
  139. C. Kaur, M. Arrawatia, and G. Kumar, “Low power portable GPS based transceiver for sea and land surveillance”, ICCSP2011, Calicut, India, pp.379-383, Feb. 2011.
  140. G. Kumar and N. Kumar, “Thermal effects of cell phone and cell tower radiation”, Micro-Nano-2011, JNU, Delhi, India, March 2011.
  141. D. Unnikrishnan and G. Kumar, “Half wavelength double-ridged half height rectangular waveguide resonator”, Proc. ICVCI, Kottayam, Kerala, India, pp. 586-590, April 2011.
  142. D. Bhatnagar, et al, “Microwave Related Activities in India: An Overview” Proc. 41st European Microwave Conference, Manchester, UK, pp. 1356-1359, Oct. 2011.
  143. P. Mathur, G. Kumar and M. Chattopadhyay, “Non radiating edge gap coupled microstrip antennas for 3G Applications”, ICMARS, Jodhpur, India, pp. 219-220, December 2011.
  144. M. Arrawatia, V. Diddi, H. Kochar, M. S. Baghini, and G. Kumar, “An Integrated CMOS RF Energy Harvester with Differential Microstrip Antenna and On-Chip Charger”, Proc. IEEE Int. Conf. on VLSI Design, pp.209-214, Hyderabad, India, Jan. 2012.
  145. P.K. Mishra and G. Kumar, “Dual polarized circular microstrip space-fed antenna array design with high isolation and broad bandwidth”, ICDCS, Coimbatore, India, pp. 538-542, March 2012.
  146. P. Mathur, G. Kumar and M. Chattopadhyay, “Non-radiating edge gap coupled Capsule- shaped and Nose-shaped Microstrip Antennas for 3G Applications”, ICECT, Kanyakumari, India, April 2012.
  147. P. Pathak, P.K. Mishra, G. Kumar and D.N. Singh, “Detection of water level by monopole antenna”, National conference on Recent Trends in Microwave Techniques and Applications (Microwave 2012), Jaipur, India, July 2012.
  148. M. Arrawatia, A. Yadav, M.S. Baghini and G. Kumar, “Broadband Elliptical Rectenna for RF Energy Harvesting”, National conference on Recent Trends in Microwave Techniques and Applications (Microwave 2012), Jaipur, India, July 2012.
  149. P.K. Mishra and G. Kumar, “Cavity Backed Slot Antenna Array for Broad Beamwidth in the Horizontal E-Plane”, National conference on Recent Trends in Microwave Techniques and Applications (Microwave 2012), Jaipur, India, July 2012.
  150. P. Mathur, M. Chattopadhyay and G. Kumar, “Orthogonal fed Four Edges Gap Coupled Microstrip Antennas for 3G Applications”, National conference on Recent Trends in Microwave Techniques and Applications (Microwave 2012), Jaipur, India, July 2012.
  151. N. Kumar, I. Das and G. Kumar, “Electromagnetic Radiation Hazards and its Biological Effect”, Proc. of National Conf. on Harmful Effects of Mobile Phone Radiations on the Health of Human Beings, Barwani, India, p. 1, Sep. 2012.
  152. I. Das, N. Kumar, and G. Kumar, “Review of Electromagnetic Radiation Effect on Plant Growth and Productivity”, Proc. of National Conf. on Harmful Effects of Mobile Phone Radiations on the Health of Human Beings, Barwani, India, p. 2, Sep. 2012.
  153. I. Das, G. Kumar and N.G. Shah, Disinfestation of food products using microwave energy: A review”, Proc. of Int. Conf. on Food Processing & Technology, Hyderabad, p. 82, Nov. 2012.
  154. G. Kumar, “Cell Phone/Tower Radiation Hazards and Solutions”, Proc. of Int. Conf. on Engineering, NUiCONE, Ahmedabad, India, pp. 109-110, Dec. 2012.
  155. M. Arrawatia, M.S. Baghini, and G. Kumar, “RF Energy Harvesting  from FM Towers” National Symposium on Antennas and Propagation (APSYM 2012), India, Dec. 2012.
  156. G. Kumar, “Health Hazards due to Cell Phone/Tower Radiation and Solutions”, Proc. of 15th Annual Conf. of Indian Assoc. of Preventive and Social Medicine, Jhansi, India, Dec. 2012.
  157. G. Kumar, “Cell Tower Radiation Hazards and Solutions”, International Conf. on Communications, Devices and Intelligent Systems, Kolkata, India, Dec. 2012.
  158. B. V. Ramarao, J. K. Mishra, Manjiri Pande, P. Singh, G. Kumar, and J. Mukherjee, “Comparison study of LDMOS and VDMOS technologies for RF power “, AIP Conf. Proc. 1512, pp. 492-493, Mumbai, India, Dec. 2012.
  159. P. K. Mishra and G. Kumar, “Electromagnetically coupled dual polarized antenna with high isolation and broad bandwidth”, International Symposium on Microwaves (ISM), Bengaluru, India, Dec. 2012.
  160. P. K. Mishra, D. R. Jahagirdar and G. Kumar, “A dual orthogonally polarized antenna with high isolation and broad bandwidth”, International Conference on Navigation and Communication (NAVCOM), Hyderabad, India, pp. 228-232, Dec. 2012.
  161. P.K. Mishra and G. Kumar, “Broadband Sectoral Antenna Array Using Printed Dipole with Reflector for Wider Beam Coverage in H-Plane”, National Conference on Communications-2013, IIT Delhi, India, pp. 1-5, Feb. 2013.
  162. G. Kumar, “Cell Towers - an income avenue or a menace”, National Conference on Co-operative Societies, Trusts, Redevelopment of properties, legal and taxation aspects, Mumbai, India, pp. 47-55, Aug. 2013.
  163. G. Kumar, P. Mathur, G. Joshi, R. Kumar and BV Ramarao, “Design and Development of RF Components for Linear Accelerator”, National Symp. on Nuclear Instrumentation (NSNI), Mumbai, pp. 4-5, Nov. 2013.
  164. R. Tejwani, G. Kumar, C.S. Solanki, “Remote Monitoring for Solar Photovoltaic Systems in Rural Application Using GSM Voice Channel”, Presented at ISES Solar World Congress 2013, Cancun, Mexico, Nov. 2013.
  165. G. Kumar, “Cell Phone/Tower Radiation Hazards and Solutions”, National Conference on Mobile Phones & Electromagnetic Pollution Hazards: Challenges and Solutions”, Jaipur, India, pp. 22-23, Dec. 2013.
  166. I. Das, G. Kumar, and N.G. Shah, “Simultaneous Blanching and Drying of button Mushroom (AgaricusBisporus) using Microwave Enhanced Hot Air Heating System”, 2nd International Conference on Agricultural & Horticultural Sciences, Hyderabad, India, p. 124, Feb. 2014.
  167. H. Patil, I. Das, G. Kumar, and N.G. Shah, “Almond Quality as Influenced by Microwave Treatment for Disinfestation”, 2nd International Conference on Agricultural & Horticultural Sciences, Hyderabad, India, p. 127, Feb. 2014.
  168. G. Kumar, “Cell Phone/Tower Radiation Hazards and Solutions”, National Seminar on Cell Phone/Tower Radiation Hazards and Solutions”, IASST, Guwahati, India, pp. 7-8, Feb. 2014.
  169. P. K. Mishra, D. R. Jahagirdar and G. Kumar, “A broadband cavity-backed slot antenna design with small cavity height and analysis on large ground plane”, National Conference on Communication (NCC), Kanpur, India, pp. 1-6, Feb.-March 2014.
  170. A. Mardikar, M. Arrawatia, and G. Kumar, “Broadband Fractal Monopole Antenna for GSM 900, GSM 1800 and 3G Bands”, Indian Antenna Week, Chandigarh, May 2014.
  171. G. Kumar and R. Kaur, “Effect of Cell Tower Radiation on Environment”, National Seminar on Advances in Mobile Phone and Cell Tower Radiation on Environmental Health (NAME-2014), JNU, Delhi, India, Dec. 2014.
  172. V Srinivasa Rao, D. R. Jahagirdar and G. Kumar, “Design and Development of Broadband Circularly Polarized C-Band Microstrip Antenna Array” Annual IEEE India Conference (INDICON), Pune, India, Dec. 2014.
  173. P. K. Mishra, D. R. Jahagirdar and G. Kumar, “Circularly Polarized Active Antenna Array for Telemetry Reception”, 2014 IEEE International Microwave and RF Conference (IMaRC), Bengaluru, India, pp. 282-285, Dec. 2014.
  174. M. Arrawatia, M. Baghini, and G. Kumar, “Broad Band Directional Triangular Microstrip Antenna Array”, 14th International Symposium on Antennas & Propagation (Apsym-2014), Cochin, India, Dec 17-19, 2014.
  175. B. V. Ramarao, S. Sonal, J. K. Mishra, M. Pande, P. Singh, G. Kumar, and J. Mukherjee, “Design of a Four-Way 5 kW, 325 MHz Wilkinson Power Combiner for RF Accelerator”, 14th International Symposium on Antennas & Propagation (Apsym-2014), Cochin, India, Dec 17-19, 2014.
  176. Rajbala, K. P. Ray and Girish Kumar, “Effect of Finite Ground Plane on the Performance of Rectangular Microwave Antennas”, 10th International Conference on Microwaves, Antennas, Propagation and Remote Sensing (ICMARS-2014), Jodhpur, India, pp. 215-218, ICMARS14407, Dec. 9-12,2014.
  177. A. Mardikar, R. Mohan, M. Arrawatia, and G. Kumar “Dual Band Dual Circular Ring Monopole Antennas” National Conference on Communication (NCC-2015), Mumbai, India, 27 Feb -1 March, 2015
  178. D. Ghosh and G. Kumar, “A Four Branch Microstrip Coupler with Improved Bandwidth and Isolation”, Proc. 21st National Conference on Communications (NCC), Mumbai, India, pp. 1-6, 27 Feb - 1 March, 2015.
  179. H. Patil, I. Das, G. Kumar, N.G. Shah, “Microwave disinfestation and quality analysis of peanut kernels”, ICEF12 - 12th International Congress on Engineering and Food, Quebec, Canada, June 14 -18, 2015.
  180. H. Kumar and G. Kumar, “Design and Parametric Analysis of Pyramidal Horn Antenna with High Efficiency”, ISMOT, Dresden, Germany, pp. 134-137, 29 June – 1 July, 2015.
  181. P. K. Mishra, D. R. Jahagirdar and G. Kumar, “Effect of Superstrate on High Gain Space-fed Antenna Arrays”, ISMOT, Dresden, Germany, pp. 138-141, 29 June – 1 July, 2015.
  182. V. Rao, M. Arrawatia, D. R. Jahagirdar and G. Kumar, “Broadband Planar Triangular and Circular Bi-directional Antennas”, ISMOT, Dresden, Germany, pp. 152-155, 29 June – 1 July, 2015.
  183. D. Ghosh and G. Kumar, “High Isolation Dual Three Branch Microstrip Couplers”, ISMOT, Dresden, Germany, pp. 160-163, 29 June – 1 July, 2015
  184. M. Arrawatia, M. Baghini, and G. Kumar, “A Dual Band Dual Polarized Bidirectional Horse Shoe Shape Antenna”, IEEE International Symposium on Antennas and Propagation, Vancouver, Canada, pp. 1948-1949, 19-25 July 2015.
  185. P. Mathur, G. Kumar, Y. K. Verma, P. K. Mishra, “Large Gain Linear Series-Fed Microstrip Antenna Arrays at Ka and C bands”, IEEE International Symposium on Antennas and Propagation, Vancouver, Canada, pp. 1872-1873, 19-25 July 2015.
  186. P. K. Mishra, D. R. Jahagirdar and G. Kumar, “Gap-coupled Series-fed Antenna Array with Improved Bandwidth”, IEEE International Symposium on Antennas and Propagation, Vancouver, Canada, 19-25 July 2015.
  187. M. Arrawatia, M. Baghini, and G. Kumar, “A CMOS power amplifier with 180° hybrid on-chip coupler for 4G applications,” IEEE 58th International Midwest Symposium on Circuits and Systems (MWSCAS), Fort Collins, USA, pp.1-4, 2-5 Aug. 2015.
  188. V Srinivasa Rao, Vipin W. Paradkar, DR Jahagirdar, and G. Kumar, “Wideband Broad Beamwidth Circularly Polarized Stacked Microstrip Patch Antenna with RF Switch for Data Link Application”, IMARC, Hyderabad, India, Dec. 2015.
  189. G. Joshi, P. Singh, V. Agarwal, G. Kumar, “Digital limiter for a self-excited loop”, ID- 343, InPAC 2015, Mumbai, pp. 855-859, Dec. 2015
  190. G. Joshi, A. Agashe, B.K. Sahu, P. Singh, V. Agarwal, G. Kumar, “Digital self-excited loop based RF control for the superconducting resonators of IUAC Linac”, ID-344, InPAC 2015, Mumbai, pp.860 -862, Dec. 2015.
  191. A. Majumdar, R. Varghese, A. Shukla, M. Arrawatia, and G. Kumar, “Anxiety response in rats exposed to 900 MHz non-ionizing radiation”, National Seminar on Effects of mobile phone radiation on plant, human & other animals, Chas, Bokaro, India, p. 1, April 2016.
  192. A. Shukla, I. Das, G. Kumar, R. Varghese, and A. Majumdar, “Effect of 2.45 GHz on rat using microwave oven integrated with horn antenna”, National Seminar on Effects of mobile phone radiation on plant, human & other animals, Chas, Bokaro, India, p. 2, April 2016.
  193. M. Arrawatia, M. Baghini, and G. Kumar, “Broadband RF Energy Harvesting System covering CDMA, GSM900, GSM1800, 3G Bands with Inherent Impedance Matching”, IEEE International Microwave Symposium, San Francisco, USA, May 2016.
  194. M. Arrawatia, M. Baghini, and G. Kumar, “Broadband Rectenna Array for RF Energy Harvesting”, IEEE International Symposium on Antennas and Propagation, Puerto Rico, USA, June 2016.
  195. H. Kumar and G. Kumar, “Microstrip Antenna Array with Ratrace Comparator at X-Band for Monopulse Tracking Radar”, IEEE International Symposium on Antennas and Propagation, Puerto Rico, USA, pp. 513-514, June 2016.
  196. H. Kumar, G. Kumar, Y. Verma, and P. K. Mishra, “Compact Waveguide Monopulse Comparator at Ka-Band for Monopulse Tracking”, IEEE International Symposium on Antennas and Propagation, Puerto Rico, USA, pp. 1357-1358, June 2016.
  197. D. Ghosh and G. Kumar, “A Four Port Microstrip Testset for Network Analyzers”, Proc. 46th European Microwave Conference, London, UK, pp. 377-380, Oct. 2016.
  198. P. Mathur and G. Kumar, “Improved Performance of Microstrip Antenna Arrays Through Electromagnetic Coupling At Ka-band” 2016 Loughborough Antennas & Propagation Conference, Loughborough, UK, Nov. 2016.
  199. H. Kumar and G. Kumar, “An Inverted Suspended Microstrip Antenna Array Integrated with Ratrace Comparator at X-Band for Monopulse Tracking”, Proc. Asia Pacific Microwave Conference (APMC-2016), New Delhi, pp. 1-4, Dec. 2016.
  200. S. Sharma, H. Kumar and G. Kumar, “Single Feed Dual Band Circularly Polarized Stub Loaded Tunable Microstrip Patch Antenna”, Proc. Asia Pacific Microwave Conference (APMC-2016), New Delhi, Dec. 2016.
  201. P. Mathur and G. Kumar, “Non-Radiating Edge Coupled Rectangular Microstrip Antenna Array”, Proc. Asia Pacific Microwave Conference (APMC-2016), New Delhi, Dec. 2016.
  202. R. Chopra, G. Kumar, and R. Lakhmani, “Corner Fed Microstrip Antenna Array with Reduced Cross Polarization and Side Lobe Level”, Proc. Asia Pacific Microwave Conference (APMC-2016), New Delhi, Dec. 2016.
  203. P. K. Mishra, D. R. Jahagirdar, and G. Kumar, “Broadband Cylindrical Cavity Backed Slot Antenna for Telemetry Applications”, Proc. Asia Pacific Microwave Conference (APMC-2016), New Delhi, Dec. 2016.
  204. D. Ghosh and G. Kumar, “Asymmetric high isolation 6 dB microstrip couplers for load sensing applications,” IEEE MTT-S Intl. Microwave and RF Conference, New Delhi, India, pp. 1-4, Dec. 2016.
  205. S. P. Wadkar, S. M. Rathod, H. Kumar, G. Kumar and B. G. Hogade, “Normal Mode Helical Antenna at 1.8 GHz with Small Circular Ground Plane”, 15th International Symposium on Antennas & Propagation (Apsym-2016), Cochin, India, , pp. 1-4, Dec. 2016.
  206. H. Patil, I. Das, G. Kumar, and N. G. Shah, “Disinfestation of Sesame Seeds using Microwaves along with Quality Analysis and Shelf Life Studies”, Int. Conf. on Emerging Technologies in Agricultural and Food Engineering, IIT Kharagpur, Dec. 2016.
  207. H. Kumar and G. Kumar, “Compact Planar Yagi-Uda Antenna with Improved Characteristics”, 11th IEEE European Conference on Antenna and Propagation, Paris, France, pp. 2008-2012, 19-24 March 2017.
  208. S. P. Wadkar, G. Kumar, R. Chopra, and B.G. Hogade, “Broadband and high gain stacked antennas for wireless communication systems”, Indian Antenna Week (IAW), Pune, India, June 2017.
  209. H. Kumar and G. Kumar, “Compact Planar Log-Periodic Dipole Array Based Yagi-Uda Antenna,” IEEE International Symposium on Antennas and Propagation, San Diego, California, July 2017
  210. P. Mathur and G. Kumar, ”Waveguide fed Microstrip Antenna Array using I-shaped slots at Ka-band,” IEEE International Symposium on Antennas and Propagation, San Diego, California, July 2017.
  211. M. Arrawatia, M.S. Baghini, and G. Kumar, “Broadband Omnidirectional Antenna for GSM900, GSM1800, 3G, 4G and Wi-Fi Applications”, IEEE International Symposium on Antennas and Propagation, San Diego, California, July 2017
  212. D. Ghosh and G. Kumar, “Broadband high directivity asymmetric microstrip coupler using quadrature mode suppression,” Progress in Electromagnetics Research Symposium (PIERS), Singapore, Nov. 2017.
  213. D. Ghosh, V. B. Narayane and G. Kumar, “Improved bandwidth four branch microstrip coupler using lumped and distributed elements,” Progress in Electromagnetics Research Symposium (PIERS), Singapore, Nov. 2017
  214. R. Chopra and G. Kumar, “Compact Dumbbell Shaped Microstrip Antenna with Suppressed Harmonics” Progress in Electromagnetics Research Symposium (PIERS), Singapore, Nov. 2017.
  215. A. K. Singh, H. Kumar, G. Kumar, and M. R. Tripathy, “Seven Element Wideband Planar Log-periodic Antenna for TVWS Base Station” Progress in Electromagnetics Research Symposium (PIERS), Singapore, Nov. 2017.
  216. K. K. Bindu, R. Chopra, and G. Kumar, “Low Cost Broadband Stacked Circular Microstrip Antenna” Conference of Indian Antenna Innovation and Modern Technologies (IAIM), Bangalore, India, Nov. 2017.
  217. S. P. Wadkar, S. M. Rathod, H. Kumar, G. Kumar and B. G. Hogade, “Effect of variation of height on performance of normal mode helical antenna”, 6th Biennial Applied Electromagnetics Conference, Aurangabad, India, Dec. 2017.
 
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