Faculty Details proforma for DU Web-site (PLEASE FILL THIS IN AND Email it to [email protected] and cc: [email protected] Title Prof. First Name Anand Last Verma Photograph Name Designation Professor Address Department of Electronic Science South Campus, University of Delhi, New Delhi- 110021 Phone No Office 24112231- ext196 32/D-15, Sector-7, Rohini New Delhi-110085 Residence Phone 27048455 (Home) Email [email protected] Web-Page - Educational Qualifications Degree Institution Year Ph.D. University of Ranchi 1983 M.Phil. / M.Tech. - PG - B.Tech BIT, Sindri, Ranchi University 1971 Certificate course on AIBD, Kuala Lumpur, Malaysia 1987 Training Methodology Career Profile 1. Adjunct Professor Department of Electronics, Division of Information and Communication , Macquarie University, Sydney, Australia since 2008 . 1. Department of Electronic Science, South Campus, University of Delhi Professor: 19. 2. 1988- Present Teaching M.Tech (Microwave), M.Phil., M.Sc. (Electronics), Research Guidance. 2. Department of Electronic Science, South Campus, University of Delhi Reader: 19. 2. 1988- Feb. 1986 Teaching M.Tech (Microwave), M.Phil., M.Sc. (Electronics), Research Guidance. 3. Doordarshan & All India Radio (Staff Training Institute) Station Engineer & Dy. Director ( Senior Class-I): Sept. 1982 – Feb.1988 Maintenance of TV Station, Satellite Communication Project and Designing, Conducting and Management of Technical Training Program. www.du.ac.in Page 1 4. All India Radio Assistant Station Engineer (Class-I, Indian Engineering Services): Aug. 1973 –Sept.1982 Project management for installation of Radio Studio, Transmitters etc. and supervision and maintenance of broadcasting stations. 5. Bokaro Steel Ltd., Bokaro Testing & Commissioning Engineer: Aug. 1971 –Aug.1973 Testing & Commissioning of Electric Drives and Control System of Blast Administrative Assignments Head, Department of Electronic Science. On Governing bodies of several colleges. Heading Technical wing of Broadcasting stations. Areas of Interest / Specialization Planar Passive Microwave & mm - Wave Components Planar Microwave Antenna Microwave Computer Aided Design Numerical Techniques in Electromagnetic Theory Subjects Taught Theory Courses: M. Tech. ( Microwave ) Microwave Measurement Microwave & mm - Wave Components Microwave Antenna Microwave Computer Aided Design M. Sc. Electronic Science Communication Engineering ( Analog) Antenna and Radio wave Propagation Laboratory For M. Tech. Microwave Laboratory Microwave CAD Laboratory Research Guidance List against each head (If applicable) 1. Supervision of awarded Doctoral Thesis-7 www.du.ac.in Page 2 2. Supervision of Doctoral Thesis, under progress-4 Publications Profile 1. Research papers published in Refereed/Peer Reviewed Journals 1. Verma, A.K. and Saha, A.L., 1980. Multielement Legendre Coupler. JIETE (India) Vol.5 2. Verma, A.K. and Saha, A.L, 1984 . Semicircular Resonant Cavity Type H Rectangular Mode to H 10 01 Circular mode Transducer. JIETE (India), Vol.35 3. Verma, A.K. and Saha, A.L, 1987. A Wheel Type Channel Dropping Filter. JIETE (India) Review, Vol.3 4. Verma, A.K. Bhupal,A., Rostamy, Z. and Srivastava, G.P . 1991. Analysis of covered Microstrip Rectangular Patch Antenna. IEICE (Japan) Trans, Vol 74, No. 20 5. Verma, A.K.and Rostamy, Z. . 1991. Modified Wolff Model for Resonance Frequency of covered rectangular patch antenna. Electronic Letters, Vol 74, No 20: 1850-1852 6. Verma, A.K.and Rostamy, Z. 1991 .Modified Wolff Model for determination of Resonance Frequency of covered circular microstrip patch antenna. Electronic Letters, No 24: 2234- 2236 7. Verma, A. K. and Sadr, G.H. . 1992. Unified Dispersion Model for multilayer microstrip line. IEEE Transaction Microwave Theory Tech, MTT-40, No. 7 8. Verma, A.K.and Rostamy, Z. . 1993. Resonant frequency of uncovered/ covered rectangular microstrip patch using MWM. IEEE Transaction. Microwave, Theory Tech. Vol.41, No.1 9. Verma, A.K, Kumar, R.and Sadr, G.H. . 1993. Pulse Propagation on multilayer microstrip line. IEEE Sym. on Microwave Theory Tech. 10. Verma, A.K.and Sadr, G.H. 1994 . Determination of open-end Discontinuity and Resonance Frequency of suspended microstrip using SLR technique. Microwave Optical Tech. Letters 11. Verma, A.K.and Rostamy, Z. . 1995. Resonant frequency of shielded rectangular and circular patch resonators. International Journal of Microwave MM wave CAD Engineering 12. Verma, A.K.and Rostamy, Z. . 1995. Static Capacitance of Some Multilayered Microstrip patch Capacitors. IEEE Transaction. Microwave Theory Tech., No.5 13. Verma, A.K.and Kumar, R. . 1996. Empirical formula for frequency dependent effective permittivity of shielded microstrip lines. Microwave Optical, Tech. Letters, June 14. Verma, A.K. and Kumar, R. . 1996. Closed-form dispersion expression for shielded microstrip for mm-wave line applications. Electronic Letters, Vol.32, No.15, July. 15. Verma, A.K. and Kumar, R. . 1996. A closed-form dispersion model for mm-wave suspended microstrip line. Microwave optical Tech. Letters, Vol.14, No.1, Jan. 16. Verma, A.K, Sharma, M.and Kumar, R. . 1997. Closed-form expression for accurate determination of www.du.ac.in Page 3 capacitance and effective radius of microstrip circular disk. Microwave Optical Tech. Letters, March 17. Closed form dispersion model for Composite/Suspended Substrate Microstrip Line, Verma, A.K.and Kumar, R., Microwave Optical Tech. Letter, November, 1997 18. Verma, A.K, Kumar, R. . 1997. A new Dispersion model for microstrip line. Trans. Microwave Theory Tech., August 19. Verma, A.K, Kumar, R. . 1998. A new Unified dispersion model for suspended, shielded and composite microstrip line. IEEE Trans. Microwave Theory Tech. August, 20. Verma, A.K.and Bhupal, A. . 1998. Dielectric Loss of Multilayer Microstrip Line. Microwave Optical Tech. Letters, March 21. Verma, A.K.and Kumar, R. . 1998. Distortion in Gausssian pulse on Microstrip-Like Transmission Line. Microwave Optical Tech. Letters, April 22. Verma, A.K.and Bhupal, A. . 1998. Conductor Loss of Multilayer Microstrip Line Using the SLR Formulation. Microwave Optical Tech. Letters, September 23. Verma, A.K. and Bhupal, A. . 1998. Analysis of Multimayer Microstrip Line Slow Wave Structure Using the SLR Formulation, Microwave Optical Tech.Letters, Oct. 24. Verma, A.K.and Bhupal, A. . 1998. Resonance Frequency of Anisotropic Multilayer Rectangular Microstrip Patch Using MWM. Verma. Electronic Letters, Vol.34, No. 4, February: 323-325 25. Verma, A.K.and Sharma, E. K. . 1999. Analysis of Optically Controlled microstrip slow wave structures. Proc. SPIE. 26. Verma Y. K. and Verma , A. K. . 2000. Determination of Dielectric constant of Substrate Using MWM. IEEE Sym. on Microwave Theory Tech., June 27. Verma A. K. , Nasimuddin . 2001. Quasi-static RLCG parameters of lossy microstrip line for CAD application. Microwave Optical Tech.Letters, Feb. 28. Verma A. K. , Nasimuddin . 2001. Propagation characteristics of Schottky contact slow wave microstrip line, A. K. Verma and Nasimuddin .Microwave Optical Tech.Letters, June. 29. Verma A. K. , Nasimuddin . 2001. Propagation characteristics of Schottky contact suspended slow- wave microstrip line. IEEE Microwave & Wireless Components Letters, Vol.11, No.9 : 385-387. 30. Dielectric loss of multilayer coupled microstrip line, A. K. Verma and Nasimuddin. Microwave Optical Tech.Letters, October, 2001. 31. Bhaduria A., Sharma E. K., and Verma A.K. . 2001. Equivanent transmission line model for optically controlled microstrip slow wave structures. Microwave Optical Tech. Letters, Vol.31, No.4: 292-298. 32. Verma A. K. , Nasimuddin . 2001. Resonance frequency of rectangular microstrip antenna on thick substrate. Electronic Letters, No 23, Nov 33. Verma A. K. , Nasimuddin . 2001. Input impedance of rectangular microstrip patch antenna with ISO/ Anisotropic substrate-superstrate. IEEE Microwave & Wireless Components Letters, Vol.11, No.11, www.du.ac.in Page 4 November . 34. Verma A. K. , Nasimuddin . 2001. Input impedance of probe fed mutilayer rectangular microstrip patch antenna using MWM,. Microwave Optical Tech. Letters, Vol November . 35. Verma A. K. , Nasimuddin . 2002. Resonance frequency and bandwidth of rectangular microstrip antenna on thick substrate. IEEE Microwave & Wireless Components Letters, February 36. Verma A. K. , Nasimuddin . 2002. Analysis of Circular Microstrip Antennas on Low and High Relative Permittivity Substrates. Microwave Optical Tech. Letters, Vol, July. 37. Verma A. K. , Nasimuddin . 2002. Propagation characteristics of suspended MIS coupled slow- wave microstrip line. Microwave Optical Tech. Letters Vol. September, 38. Verma A. K. , Nasimuddin . 2002. Determination of Dielectric Constant and Loss-Tangent Substrate Sheet Using Microstrip Patch Resonator. Microwave Optical Tech. Letters, Vol.5, Nov. 39. Verma A. K. , Nasimuddin . 2002. Analysis of Circular Microstrip Antennas on thick substrate. Journal of Microwave and Optoelectronics, vol. 5, no. 1, July . 40. Verma A. K. , Nasimuddin . 2002. Simple expressions for directivity of circular microstrip antenna. IEEE Antennas and Propagation Magazine, Vol.44, No.5: 91-95. 41 Verma A. K. , Nasimuddin . 2003. Analysis of Circular Microstrip Patch Antenna as an Equivalent Rectangular Microstrip Patch Antenna on Iso/Anisotropic Thick Substrate. IEE Proc. Microwave, Antenna and Propagation, Vol.150, No.4: 223-229. 42 Verma A. K. , Nasimuddin . 2003. Accurate Determination of Input Parameters of Rectangular Microstrip Patch Antennaon Thick Substrate and Comparison Of Several Models. J. Electromagnectics, Vol. 23, No 3: 253 – 276 43. Verma A. K. , Nasimuddin . 2003. Nondestructive Measurement of Complex Permittivity of Sheet Material. Microwave and Optical Technology Letters (U.S.A.), Vol.36, No.6, March . 44. Rahman A. A. , Verma A. K., and Omar A.S. . 2003. High gain wideband compact microstrip antenna with quasi-planner surface mount horn. IEEE MTT (S)-June 45. Verma A. K. , Nasimuddin, Omar A.S. . 2003. Accurate Expressions for Directivity of Circular Microstrip Antenna on Suspended and Composite Substrate. Microwave Optical Tech. Letters, Vol. July. 5 . 46. Verma A. K. , Nasimuddin . 2003. Determination of Conductor Loss of Multilayer Coupled Microstrip Lines for CAD Application. Microwave Optical Tech. Letters, Vol. Sept. 47. Bhaduria A., Nasimmuddin, Verma A. K., Sharma E. K. and Singh B. R. . 2003. Optically controlled microstrip load and stub on silicon substrate”, , Microwave Optical Tech. Letters, Vol.39, November 48. Rahman A. A. , Verma A. K., Boutejdar A. and Omar A.S. . 2004. Control of bandstop response of Hi-Lo microstrip lowpass filter using slot in ground planeIEEE Trans. Microwave Theory Tech. Vol.52, No.3, March. www.du.ac.in Page 5 49. Rahman A. A. , Verma A. K., Boutejdar A. and Omar A.S. . 2004. Compact stub type microstrip bandpass filter using defected ground plane. IEEE Microwave & Wireless Components Letters, April 50. Verma A. K. , Nasimuddin . 2004. Multilayer cavity model for microstrip Rectangular and Circular Patch Antenna. Electromagnectics, Vol. 23, No 3, April 51 Verma A. K. , Nasimuddin, Sharma E.K. . 2004. Analysis and circuit model of multilayer semiconductor slow-wave microstrip line. IEE Proc. Microwave, Antenna and Propagation, Oct 52. Verma A. K. , Nasimuddin, Omar A.S. . 2005. Microstrip resonator sensors for determination of complex permittivity of materials in sheet, liquid and paste forms. IEE Proc. Microwave, Antenna and Propagation, Feb. Vol. 151, No. 1: 47-54 53. Nasimuddin, Esselle Karu and Verma A. K. .2005. Fast and accurate model for circular microstrip antennas on suspended and composite substrates. IEEE Trans. Antenna & Propagation . vol. 53, no. 9, September: 3097-3100. 54. Nasimuddin, Esselle Karu and Verma A. K. .2005. Resonance frequency of an Equilateral triangular microstrip antenna. Microwave and Optical Technology Letters, vol. 47, no. 5, December, : 485-489. 55. Nasimuddin, Esselle Karu and Verma A. K. .2007. Wideband Circularly Polarized Stacked Microstrip Antennas. IEEE Antennas and Wireless Propagation Letters, Vol. 6: 21-24 56. Nasimuddin, Esselle Karu and Verma A. K. .2007. Optimizing the Coaxial-Feed Location to Enhance Circular Polarization Bandwidth of Stacked Microstrip Antennas. Microwave and Optical Tech. Letters, Vol. 49, No. 1, January : pp. 132-135. 57. Nasimuddin, Esselle Karu and Verma A. K. .2008. Wideband High-Gain Circularly Polarized Stacked Microstrip Antennas with an Optimized C-Type Feed and a Short Horn. IEEE Transactions on Antennas and Propagation, Vol 56, No. 2,February: 578-581 58. Verma A. K., Singh Himanshu. 2009. Circuit Model of Microstrip Step Discontinuity”, International Journal of Microwave and Optical Technology, Vol. 4, No. 2, March: 76-82. 59. Verma A. K., Awasthi Y.K., Singh Himanshu. 2009. Closed-form Model of W/h- Dependent Equivalent Isotropic Relative Permittivity of Microstrip on Multilayer Anisotropic Substrate. International Journal of Microwave and Optical Technology, Vol. 4, No. 2, March: 107-114. 60. Singh Himanshu, Verma A. K., Awasthi Y.K. .2009. Circuit model of multilayer microstrip step discontinuity using SLR formulation”, International Journal of Electromagnetics, Vol. 29, No. 6, July: 483-498. 61. Verma A. K., Awasthi Y.K., Singh Himanshu. 2009. Equivalent Isotropic Relative Permittivity of Microstrip on Multilayer Anisotropic Substrate. International Journal of Electronics, Vol. 96, No .8, August: 865-875. 62. Awasthi Y.K., Singh Himanshu, Kumar A., Singh P., Verma A. K. . 2009. Accurate CAD-Model Analysis of Multilayer Microstrip Line on Anisotropic Substrate. Journal of Infrared, Millimeter, and Terahertz Waves, 16 October: www.du.ac.in Page 6 63. P. Majumdar and A.K. Verma, “Closed-form Dispersion Models for Propagation Characteristics of Slot-line in Lossy Media with Conductor Thickness,” International Journal of Microwave and Optical Technology, Vol.4,No.2, pp-83-89, March 2009. 64. Majumdar,P , Verma A. K.. 2010. Accurate Closed- form Model for Computation of Conductor Loss of Coplanar Waveguide,” International Journal of RF and Microwave Computer-Aided Engineering, vol. 20, no.1January : 6-14 65. Majumdar,P , Verma A. K.. 2010. Modified Closed-form Dispersion and Losses Models of Slot-Line with Conductor Thickness,” International Journal of Infrared, Millimeter and Terahertz Waves, vol. 31, no.3, March: 271-287 66. Y. Ranga, Karu. P. Esselle and A. K Verma, “ Planar-Monopole-Fed, Surface-Mounted Quasi- TEM Horn Antenna for UWB Systems”, IEEE Trans Antenna and Prop. vol 58, no.7 pp.2436-2439, July, 2010. 67. Payal Majumdar and A.K. Verma, “Accurate CAD Model of Stopping Distance to Compute Conductor Loss of CPW,” International Journal of Electronics and Communications, AËU, Vol.64, pp.1157-1166, December 2010. 68. Y. Ranga, Karu. P. Esselle, A. Weily and A. K Verma, “A constant gain printed circular monopole antenna for UWB applications”, Microwave and Optical Technology Letters, vol. 52, no. 6, June 2010, Pages: 1261-1264 69. Y. Ranga, Karu. P. Esselle and Andrew R. Weily, “Compact Ultra-Wideband CPW-Fed Printed Semicircular Slot Antenna,” Microwave and Optical Technology Letters, vol. 52, no. 10, October 2010, Pages: 2367-2372. 70. Payal Majumdar and A.K. Verma, “CAD Models of Losses for Symmetric Elliptical and Circular Cylindrical Coplanar Strip Lines,” Int. Journal of Electronics, Vol. 98, No. 7, pp. 863-882, July 2011. 71. Payal Majumdar and A.K. Verma, “Integrated Closed-form model and Circuit Model of Lossy Slot line,” IET Microwaves, Antennas & Propagation, Vo.5, No.14, 2011, pp.1763-1773 72. A.K.Verma and Ashwani Kumar ,”Synthesis of Microstrip Lowpass Filter Using Defected Ground Structures” IET Microwaves, Antennas & Propagation, 2011 73.. Payal Majumdar and A.K. Verma, “CAD Models of Losses for Symmetric Elliptical and Circular Cylindrical Coplanar Strip Lines,” Int. Journal of Electronics, Vol. 98, No. 7, pp. 863-882, July 2011. 74. Payal Majumdar and A.K. Verma, “Integrated Closed-form model and Circuit Model of Lossy Slot line,” IET Microwaves, Antennas & Propagation, vol. 5 ,No. 14 November 18 2011, pp. 1763-1772 75. A.K.Verma, Ashwani Kumar “Design of Low Pass Filters using Some Defected Ground Structures”, International Journal of Electronics and Communications Elsevier, Volume 65, Issue 10, Pages 864-872, October 2011. www.du.ac.in Page 7 76.A.K.Verma, Ashwani Kumar, “Synthesis of Microstrip Low pass Filter Using Defected Ground Structures”, IET Microwaves, Antennas & Propagation, Volume: 5 Issue:12, page(s): 1431 - 1439. September 16 2011. 77. Anand K. Verma, ,Adel Abdel-Rahman, Ashwani Kumar , Nainu P. Chaudhari, Atallah Balalem and Abbas Omar, "New Compact Dual-Band Bandstop Filter" International Journal of Electronics,Taylor & Francis. 78. A. K. Verma, Paramjeet Singh, “Loss Computation of Multilayer Coplanar Waveguide using Single Layer Reduction Method”, International Journal of Electromagnetics and Applications (IJEA), Vol. 2, No. 6, November 2012, pp. 174-181. 79. 79. A.. K. Verma, Paramjeet Singh, Ritu Bansal, “Computation of Static and Frequency Dependent Line Parameters of Multilayer CPW using Static SDA and Single Layer Reduction Method”, International Journal of RF and Microwave Computer-Aided Engineering, (Accepted). 80. A. K. Verma, Paramjeet Singh, Ritu Bansal, “Modeling for Dispersion and Losses of Multilayer Asymmetric CPW on Iso/Anisotropic Substrate”, Progress In Electromagnetics Research B (PIER-B), Vol. 48, February 2013, pp. 395-419. 81. Anand K. Verma, Nainu P. Chaudhari, and Ashwani Kumar, „High Performance Microstrip Transverse Resonance Lowpass Filter”, Microwave Optical Tech. Letters, Vol. 55, May 2013 . 82. Anand K. Verma, Nainu P. Chaudhari, and Ashwani Kumar, “ Improved performance step impedance lowpass filter”, Int. J. Electron. Commun. (AEÜ) 67 (2013) 754– 760 2 a. Research papers in Conference (International) 1. Verma, A.K., Kumar S.and Rostamy, Z . 1989. Frequency adjustable suspended microstrip antenna. International Symposium on EMC Nagoya, Japan 2. Verma, A.K., Kumar S.and Rostamy, Z . 1990. Symmetrical Beamwidth Microstrip Antenna, Verma, A.K.,Kumar, S.and Rostamy, Z., Asia-Pacific Microwave Conference , Sept , Tokyo, Japan. 3. Verma, A.K., Kumar S.and Rostamy, Z . 1990. High efficiency suspended microstrip antenna on GaAs. International Symposium on mm-wave & microwave, Dehradun, India. 4. Verma, A.K.and Rostamy, Z. .1992. Resonance frequency for covered rectangular Microstrip antenna. International Symposium on EMC , May, Beijing China. 5. Verma, A.K.and Rostamy, Z. .1992. Design of cover to protect rectangular microstrip antenna against www.du.ac.in Page 8 icing,. Int Symposium on EMC May, China, Beijing. 6. Verma, A.K.and Rostamy, Z. .1992. Effect of top shield on the resonant frequency of rectangular patch antenna. URSI International Symposium on Electromagnetic Theory 11-13, Aug. Sydney, Australia. 7. Verma, A.K., Bhupal, A.and Rostamy, Z. .1992 . Icing effect on dielectric cover and suspended dielectric cover microstrip antenna,. Asia-Pacific Microwave conference, Aug, Adelaide, Australia. 8. A unified approach to determine resonance frequency of circular patch with superstrate, Verma, A.K.and Rostamy, Z., APMC Adelaide Australia, Aug., 1992 9. Verma, A.K.and Sadr, G.H. .1992. Analysis and Synthesis of MSM and DSM line. Int EMC Symposium, EMCS-92, 7-9 Dec, Singapore. 10 Verma, A.K.and Rostamy, Z. . 1992. Resonant frequency of covered annular microstrip antenna. Int EMC Symposium IEMCS-92, 7-9 Dec, Singapore. \ 11 Verma, A.K.and Rostamy, Z. .1992. Resonant frequency of Equilateral Triangular patch resonator with superstrate using Modified Wolff Model. International Symposium on Antenna & Propagation ISAP, Sept, Sapporrio, Japan. 12. Verma, A.K.and Rostamy, Z. .1992. Resonance frequency of Dielectric covered Hexagonal Patch. Int. Symposium on Antenna & Propagation, APSYM, Cochin, India. 13. Verma, A.K.and Sadr, G.H. 1992. Extended Kirschning-Jansen Dispersion Model for shielded and dielectric cover MSL. Int. Symposium. on Antenna & Propagation, APSYM-CUSAT, Dec., Cochin, India, 14. Verma, A.K.and Rostamy, Z. . 1993. Determination of capacitance and Resonance Frequency of Shielded circular Microstrip Patch using MWM. 4th Int. Symposium. on Recent Advance in Microwave Tech, ISRAMT'93, Dec, N. Delhi, India. 15. Verma, A.K.and Kumar, R. . 1993 Control of Distortion in high speed Pulse propagation on Microstrip line. 4th Int. Symposium on Recent Advance in MicrowaveTech, ISRAMT' 93 , Dec., New Delhi, India. 16. Verma, A.K.and Sadr, G.H. .1993 .Characterisation of Multilayer Microstrip line Using SLR Technique for CAD application. 4th Int. Symposium on Recent Advance in Microwave Tech, ISRAMT' 93 , Dec., New Delhi, India. 17. Verma, A.K.and Sadr, G.H. .1993.CAD Process for synthesis of multilayer microstrip line. 23rd Eu Microwave Conference, September , Madrid, Spain.1993 18. Verma, A.K.and Rostamy, Z.,. 1993 . Determination of Resonance Frequency for suspended Microstrip Resonator. Int Symposium on Radio Propagation ISRP' 93, Sept Beijing China. www.du.ac.in Page 9 19. Verma, A.K.and Sadr, G.H. . 1993. Accurate calculation of Resonance Frequency of Microstrip Antenna with Superstrate. PIERS California Institute of Technology, July 12-16, California USA. 20. Verma, A.K.and Sadr, G.H..1993. Modelling of Open Ended Multilayer Microstrip Discontinuities. Asia-Pacific Microwave Conference APMC‟ 93, 18-21 Oct. Taiwan, China. 21. Verma, A.K.and Sadr, G.H..1993. 1993Dielectric loss of composite substrate Microstrip line for MMIC CAD-application, Asia-Pacific Microwave Conference, APMC‟ 93, 18-21 Oct., Taiwan China. 22. Verma, A.K., Srivastava, A.K. and Gupta, V.L..1993 . Determination of Static capacitance of Multilayer Microstrip Ring.., Asia-Pacific Microwave Conference. APMC‟ 93, 18-21 Oct. Taiwan, China. 23. Verma, A.K.and Bhupal A. . 1994. Control of Slow-wave Propagation on Suspended Microstrip Line. IEEE Antenna & Propagation URSI Meeting, June, Washington, USA. 24. Verma, A.K.and Bhupal, A. . 1995. Unified Dispersion Model for Composite Substrate Shielded Parallel Coupled Microstrip Line Using SLR Technique. SBMO / IEEE MTT-S, International Microwave & Opto-Electronics Conference, July , Brazil. 25. Verma, A.K.and Kumar, R. . 1995. Modeling for Dispersion of Shielded Microstrip Line Using SLR Technique. Int. Symposium. Signal, System Electronics, Oct., San Francisco, USA. 26. Verma, A.K.and Kumar, R. . 1996. Dispersion model for suspended microstrip line. Int. Symposium. on Electrical Packaging, EPEP‟ 96, Oct. Nepa, California, USA.1 27. Verma, A.K.and Kumar, R.. 1996. Logistic dispersion model. Asia-Pacific Microwave Conference, Dec., New Delhi, India. 28. Verma, A.K.and Kumar, R. .1996. Closed-form dispersion model of composite/suspended substrate microstrip line. Asia-Pacific Microwave Conference Dec. New-Delhi, India. 29. Verma, A.K.and Sharma, E. K. .1998. Analysis of Optically Controlled microstrip slow wave structures. Photonics- 98, vol.1. pp. 235-238, Dec. New Delhi, India. 30. Sharma, E. K Bhaduria,and Verma, A.K. .2000. Analysis of Optically Controlled microstrip slow wave structures: A Circuit Model, ., Asia-Pacific Microwave Conference, pp.557-560 , Dec., Sydney, Australia. 31. Verma, A. K., Nasimuddin, Sharma, E.K. and Singh, B.R. .2000. Optically controlled coupled line microstrip attenuator. Asia-Pacific Microwave Conference, pp.1069-1072, Dec., Sydney, Australia . 32. Verma, A. K. and Nasimuddin. 2000. Synthesis and analysis of optimum directivity suspended microstrip coupler. Asia-Pacific Microwave Conference, Dec., Sydney, Australia. www.du.ac.in Page 10
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