Girish Kumar

gkumar.jpg

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

and Chairman, Wilcom Technologies Pvt. Ltd., Navi Mumbai, June 2005 - present

  • 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

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.
  • Best Paper Award in experimental area, National Communication Conference (NCC-2004), I.I.Sc. Bangalore, India
  • Awarded “Profesor Extraordinario” of the Univ. of Navarra, San Sebastian, Spain, 2004.

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.
  • 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.

Other Information

Consultancy Projects

  • Integrated voltage regulator for brushless synchronous generators, Electric Machinery, Minneapolis, USA, Summer 1989 and Summer 1990.
  • Data acquisition system for measuring pH and conductivity of soil, Agvise, North Dakota, USA, 1990.
  • Compact power supply for interactive display, North star, North Dakota, USA, 1991.
  • Measurements of cable parameters, Procon Cables Pvt. Ltd., Bombay, India, 1993.
  • Modelling and analysis of Polarimetric SAR antenna, Space Application Centre, Ahmedabad, India, 1994.
  • Measurement of cable parameters, Airtech, Bombay, India, 1996.
  • Non-ferromagnetic resonance type small isolator, Hitachi Metals, Japan, 1996 – 1997.
  • Programmable Logic controller card, Messung Systems, Pune, India, 1997.
  • Characterisation of surface mount capacitors, SIMIC Electronics, Bombay, India, 1998.
  • HF broadband antennas, Aero-Marine, Bombay, India, 1998 – 1999.
  • Microwave heating for pharmaceutical applications, Kleinzaid, Bombay, India, 1998 - 1999
  • UHF microstrip antennas, ECIL, Hyderabad, India, 1998 - 1999.
  • Microstrip antenna array for replacing paragrid antennas, ECIL, Hyderabad, India, 1998 – 2000.
  • Microstrip antennas for WLL and GSM bands, Microqual Techno (P) Ltd., Mumbai, India, 2000.
  • Design and development of hybrid coupler and scan converter, ECIL, Hyderabad, India, 2000.
  • Software development and CAD data for microstrip antenna arrays at Ka-Band, DEAL, Dehradun, India, 2000-2002.
  • Microstrip antenna arrays at X-band, BEL, Bangalore, India, 2001-2002.
  • Design of antennas for educational training systems, Signet, Mumbai, India, 2002.
  • Design and development of planar microstrip antenna array for the UHF base station, CRL BEL, Bangalore, India, 2002.
  • Design of microstrip components for microstrip trainer system, Signet, Mumbai, India, 2003.
  • Design of transmission line impedance matching devices for transmission line trainer system, Signet, Mumbai, India, 2003.
  • Testing of patch panel antennas, BSNL, Mumbai, India, 2003.
  • Design of microstrip circuits and antenna systems, Microwave & Antenna Systems (India) Pvt. Ltd., Navi Mumbai, India, 2003-2004.
  • Development of S and C band printed antennas, DEAL, Dehradun, India, 2003-2005.
  • Microwave components, equipment and software, RF Equipment (India) Pvt. Ltd., Navi Mumbai, India, 2004-2005.

• Design and development of RFID and WLAN systems, Microwave & Antenna Systems (India) Pvt. Ltd., Navi Mumbai, India, 2004-2005.

• Technical opinion on telecommunication transmission equipment, Etco Telecom Ltd., Mumbai, India, 2005.

• Antenna Design, Innoviti Embedded Solutions Pvt. Ltd., Bangalore, India, 2005.

• Technical advice for inlays for e-passport manufacturing, India Security Press, Nashik, 2007.

•Radio Frequency Radiation Study of TV Tower, Worli, I-Ven Realty Limited, Mumbai, 2007.

• Studies of the radiation impact of TV tower on residential building, Shree Ram Urban Infrastructure Limited, Worli, 2008.

• GPS based Locators for torpedo, NSTL, Visakhapatnam, 2008-2010.

• Cell tower radiation report, Telecom Users Group, Delhi, 2010.

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

Books Written

  • Broadband Microstrip Antennas, Artech House, USA, 2003.

List of Publications

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.
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. 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.
  127. 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.
  128. 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.
  129. R. S. Kashyap and G. Kumar, “Coupled line bandpass filter with attenuation poles for UWB applications”, ISMOT, Delhi, India, pp. 78-79, Dec. 2009.
  130. G. Kumar and R. Bhide, “Space fed microstrip antenna arrays”, ISMOT, Delhi, India, pp. 392-393, Dec. 2009.
  131. N. Kumar and G. Kumar, “Biological effects of cell tower radiation on human body”, ISMOT, Delhi, India, pp. 678-679, Dec. 2009.
 
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