HTTP://WWW.LONDONMET.AC.UK/LIBRARY/K69648_8.GIFLONDONMET
 

 

Dr Bal Virdee

Job Title: Academic Leader (UG Recruitment)

Dr Bal Virdee
Office: T4-03a Tower Building
Telephone: 020 7133 2172
Internal (79) 2172
e-mail address: b.virdee@londonmet.ac.uk



Academic Qualifications:
BSc(Eng) PhD CEng FIET MIEEE


Current Roles and Responsibilities:
UG Recruitment Coordinator
Industrial Liaison Group Coordinator
Head of Centre for Communications Technology
Course leader: MSc/MEng Mobile and Satellite Communications
Module Leader:

  • CTP149N Microwave and Optical Communications
  • CTP138N Satellite Communications
  • CTP140N Broadband Networks
  • CT3009N Wireless Microwave Systems
  • CT2034N Communications Systems
  • CT2040N Transmission Structures
  • CT2E01N/CT2FE1N Employment Skills For Communications Technology

     

Research
Dr Bal Virdee's research is in the area of microwave wireless communications encompassing 3G Mobile phones to satellite technology. He has supervised several PhD research students to completion and is currently supervising 5 PhDs. He has published over sixty peer reviewed papers, including 18 journal papers. He has also co-authored a book entitled Broadband Microwave Amplifiers, published by Artech House in Sept. 2004. In recognition of his research activities he has been invited on several occasions to chair sessions at international conferences. Experts have come to work with him on their sabbatical leave from e.g. Istanbul Technical University and Universidad Politécnica de Valencia. He is a peer-reviewer for prestige journals and international conferences, such as IET and IEEE among several others. He is in the Editorial Boards of Far East Journal of Electronics and Communications, and IAEng. He is also in the Program Committee & Conferences Co-Chair for The World Congress on Engineering. He is a Chartered Engineer (CEng), Fellow of the Institute of Electrical Engineers (FIET), and a Member of the Institute of Electrical and Electronics Engineers (MIEEE). The Faculty’s Centre of Communications Technology is lead by him.

Research Interest
His research interest includes: reconfigurable devices, techniques to suppress spurii in filters for electromagnetic compatible (EMC) systems, photonic band-gap (PBG) miniaturisation, Novel microstrip resonators for frequency selective applications using fractals and metamaterial phenomena, efficient high-power RF amplifiers, ultra-broadband amplifiers, novel rf high power amplifier design technique for cellular base-stations, ultra-low noise tuneable reference oscillators with low phase noise, broad tuning low noise voltage controlled oscillators (VCO), efficient low-noise oscillators, linear broadband highly efficient power amplifiers, multimode filters, ultra-broadband frequency discriminating devices, low-profile miniature antennas, and UWB communications.

Biography
Dr Bal Virdee graduated with a BSc (Eng) Honours in Communication Engineering and MPhil from Leeds University, UK. He obtained his PhD from University of North London, UK. He was worked as an academic at Open University and Leeds University. Prior to this he was an R & D Electronic Engineer in the Future Products Dept. at Filtronic Components Ltd., Shipley, West Yorkshire, and at PYE TVT (Philips) in Cambridge. He’s has held numerous duties and responsibilities at the university, i.e.: Health & Safety Officer, Postgraduate Tutor, Examination’s Officer, Admission’s Tutor, Short Course Organiser, Course Leader for BSc Communications Systems and BSc Electronics. Currently, he is Course Leader for MSc/MEng Satellite Communications. In 2010 he became an Academic Leader (UG Recruitment). He is a member of ethical committee, member of faculty’s research committee, & research degrees committee.

External and Scholarly Activities
Since 2000 he has been Director of the London Metropolitan University Microwaves (LMUM), a third stream income generation activity. At LMUM he is involved with the design and developed the “Microstrip Trainer”, which provides an innovative approach to teaching and training of students, technicians and professional engineers in microwave circuits and systems. The Microstrip Trainer comprises microwave integrated circuit building blocks used in modern microwave radio, radar and satellite communications systems. Over the last decade this product has been manufactured solely within the Faculty, and is marketed by Feedback Instruments Ltd. His other industrial collaboration was to develop dielectric resonator stabilised oscillators to operate at X-band for Alpha Industries Ltd., USA. More recently, in collaboration with Filtronic Components Ltd., he was responsible for pioneering the development of state-of-the-art ultra-broadband amplifier that is employed in defence related equipment and radar systems. I was also instrumental in the development of a novel current sharing technique for RF/microwave amplifiers. Amplifiers are the biggest power consuming devices in wireless communications systems. The technique allows consumption of power to be drastically reduced without compromising the amplifier’s performance. Hence, it prolongs battery life of wireless communications handheld devices. He has also development and run CPD courses in response to the demand made by industry. In particular, specialist five-day short courses in: Microwave Components & Devices; Microwave Communications Systems; Microwave Dielectric Resonator Oscillator Design; and Antennas & Measurement developed for PSION Computers. His other scholarly activities have included acting as a consultant reviewer for Prentice-Hall publishers in the areas of: Electromagnetic Engineering, Microwave Engineering, & Microprocessors-Based Engineering. He is also an external examiner at Leeds Metropolitan University.

Professional Memberships:

  • FIET - Fellow of the Institution of Engineering and Technology
  • MIEEE - Member of the Institution of Electrical and Electronics Engineers
  • CEng - Engineering Council, Chartered Engineer

Publications
Book
Virdee B.S. et al., Broadband Microwave Amplifiers, Artech House, September 2004,
ISBN: 1-58053-892-4.

Journals

  1. M. Naser-Moghadasi, H. Rousta, and B. S.Virdee, "A Highly Compact Semi-Elliptic Shape Ultra-Wideband Monopole Antenna", Wiley Interscience Journal in Microwave and Optical Technology Letters, Vol. 53, No. 1 January 2011, pp. 229-231. DOI 10.1002/mop.

  2. M. Naser-Moghadasi, G.R. Dadashzadeh, M. Abdollahvand, Y. Zehforoosh, B.S. Virdee, "Planar Triangular Monopole Antenna with Multi-Octave Bandwidth", Wiley Interscience Journal in Microwave and Optical Technology Letters,Vol. 53, No. 1 January 2011, pp.10-14. DOI 10.1002/mop.

  3. Gholamreza Dadashzadeh, Abdolmehdi Dadgarpour, Farid Jolani, Bal S. Virdee, "Mutual Coupling Suppression in Closely Spaced Antennas", IET Microwaves, Antennas & Propagation (Journal), Vol. 5, Issue 1, 12 January 2011, pp.113–125. DOI:10.1049/iet-map.2009.0564.

  4. Naser-Moghaddasi, M.; Sadeghzadeh, R. A.; Ghiamy, M.; Ali Lotfi Neyestanak, A.; Virdee, B. S, "An Elliptical Cylindrical FDTD Algorithm for Modeling Conformal Patch Antenna", IEEE Transactions on Antennas and Propagation (Journal), Vol. 58, Issue12, 2010 , pp. 3990 – 3996. Digital Object Identifier: 10.1109/TAP.2010.2078450

  5. Naser-Moghaddasi, M.; Sadeghzadeh, R. A.; Ghiamy, M.; Ali Lotfi Neyestanak, A.; Virdee, B. S, "An Elliptical Cylindrical FDTD Algorithm for Modeling Conformal Patch Antenna", IEEE Transactions on Antennas and Propagation (Journal), Vol. 58, Issue12, 2010 , pp. 3990 – 3996. Digital Object Identifier: 10.1109/TAP.2010.2078450

  6. Nima Bayatmaku, Mohammad Naser-Moghadasi, Mohammad Jahanbakht, and Bal S. Virdee, "A Compact Ultra-Wideband Printed Spiral Slot Antenna with Band-Notched Characteristics", Journal of Telecommunications, Vol. 3, Issue 2, July 2010, pp.29-31.

  7. M. Naser-Moghadasi, G. Dadashzadeh, A. M. Dadgarpour, F. Jolani, and B. S. Virdee, "Compact Ultra-Wideband Phase Shifter", Progress In Electromagnetics Research Letters (PIER Journal), Vol. 15, 2010, pp.89-98.

  8. M. Nosrati, M. Mirzaee, B. Virdee, "Realization of a Highly Miniaturized Elliptic-Function Band-Pass Filter using Microstrip Quasi Multi- Mode Resonator for Wide-Band Applications", Progress In Electromagnetics Research C (PIER Journal), Vol. 14, 2010, pp.1-9.

  9. M. Nosrati, B. Virdee, “Realization of a Compact Branch-Line Coupler using Quasi-Fractal Loaded Coupled Transmission-Lines”, Progress In Electromagnetics Research C (PIER Journal), Vol. 13, 2010, pp.33-40.

  10. Abdolmehdi Dadgarpour, Gholamreza Dadashzadeh, Mohammad Naser-Moghadasi, Farid Jolani, and Bal Singh Virdee, "PSO/FDTD Optimization Technique for Designing UWB In-Phase Power Divider for Linear Array Antenna Application", IEEE Antennas and Wireless Propagation Letters, Vol. 9, 2010, pp. 424-427, DOI 10.1109/LAWP.2010.2049977.

  11. M. Naser-Moghadasi, G.R. DadashZadeh, A.-A. Kalteh, Bal S. Virdee, "Design of a Novel Band-Notched Slot Patch Antenna for UWB Communication Systems", Wiley Interscience Journal in Microwave and Optical Technology Letters, Vol. 52, No. 7, July 2010, pp. 1599-1603, DOI 10.1002/mop.

  12. M. Naser-Moghadasi, L. Asadpor, R. Sadeghzadeh and Bal S. Virdee, "A CPW-fed UWB Monopole Antenna and Bifurcated Antenna with a Variable Notching Frequency", Wiley Interscience Journal in Microwave and Optical Technology Letters, Vol. 52, No. 7, July 2010, pp. 1545-1549, DOI 10.1002/mop.

  13. Mohammad Naser-Moghadasi, Reza Bayderkhani, Gholamreza Dadashzadeh, Bal S. Virdee, "Printed Wide-Slot Antenna with High Polarization Purity for Wideband Applications", Wiley Interscience Journal in Microwave and Optical Technology Letters, Vol. 52, Issue 5, May 2010, pp.1001-1006. DOI 10.1002/mop.

  14. M. Naser-Moghadasi, M. Katouli, B.S.Virdee, "Ultra-Wideband Microstrip Antenna With Enhanced Impedance Bandwidth", Wiley Interscience Journal in Microwave and Optical Technology Letters, Vol. 52, No. 4, April 2010, DOI 10.1002/mop.

  15. M. Naser Moghadasi, M. Koohestani, R. S. Sheykhan and B.S. Virdee, "Compact Printed Antenna With Novel Radiating Element for UWB Applications", IEICE Electronics Express (ELEX), Vol. 7, No 4, pp.228-233, February 25, 2010. DOI: 10.1587/elex.7.228.

  16. R.A. Sadeghzadeh-Sheikhan, M. Naser-Moghadasi, E. Ebadifallah, H. Rousta, M. Katouli and Bal S. Virdee, "Planar monopole antenna employing back-plane ladder-shaped resonant structure for ultra-wideband performance", IET Proceedings on Microwaves Antennas & Propagation, Vol. 4, Issue 9, September 2010, pp.1327-1335. DOI: 10.1049/iet-map.2009.0067

  17. B.S. Virdee, M. Naser-Moghadasi, L. Asadpor, S. Soltani, R.A. Sadeghzadeh, "Improved Band-Notch Technique for UWB Antenna", IET Proceedings on Microwaves Antennas & Propagation, Vol. 4, Iss. 11, 2010, pp. 1886–1891. DOI: 10.1049/iet-map.2009.0325.

  18. M. Naser-Moghadasi, H. Rousta, Bal. S. Virdee, "Compact UWB Planar Monopole Antenna", IEEE Antennas and Wireless Propagation Letters, Vol. 8, 2009, pp. 1382-1385, DOI: 10.1109/LAWP.2009.2039111.

  19. B.S. Virdee, "Cascaded Single-Stage Distributed Amplifier using DPHEMT Devices for Multioctave Performance", Journal of Analog Integrated Circuits and Signal Processing, August 25th 2009, Vol. 60, No. 3, pp. 1-9. DOI: 10.1007/s10470-009-9375-x

  20. M. Yazgi, A. Toker and B.S. Virdee, "A New Negative Resistance Circuit and an Application for Loss Compensation in a Distributed Amplifier", Journal of Analog Integrated Circuits and Signal Processing, January 30th 2009, Vol. 60, No. 3, pp. 215-220. DOI: 10.1007/s10470-009-9279-9

  21. M. Naser-Moghadasi, M. Koohestani, M. Golpour, B.S. Virdee, "Ultra-Wideband Square Slot Antenna with a Novel Diamond Open-Ended Microstrip Feed", Wiley Interscience Journal in Microwave and Optical Technology Letters, April 2009, Vol. 51, Issue 4, pp.1075-1080. DOI: 10.1002/mop.24242

  22. M. Naser Moghadasi, A. Dadgarpour, F. Jolani, B.S. Virdee, "Ultra Wideband Patch Antenna with A Novel Folded-Patch Technique", IET Proceedings on Microwaves Antennas & Propagation, Vol. 3, Issue 1, February 2009, pp.164-170. DOI: 10.1049/iet-map:20080013

  23. B.S. Virdee, A.S. Virdee, "Efficiency Improvement of Broadband Microwave Amplifiers using Current Sharing Concept", IEE Electronics Letters, Vol.37, No.12, 7th June 2001, pp.769-770. DOI: 10.1049/el:20010507

  24. B.S. Virdee, A.S. Virdee, "A Broadband 2 to 18 GHz Cascaded Reactively Terminated Single-Stage Distributed Amplifier", Microwave Journal, September 2000, pp.22-42.

  25. Virdee, A.S., Virdee, B.S., "Experimental performance of ultrabroadband amplifier design concept employing cascaded reactively terminated single-stage distributed amplifier configuration", IEE Electronics Letters , Vol. 36 , Issue 18, 2000, pp. 1554 –1556. DOI: 10.1049/el:20001130

  26. A.S. Virdee, B.S. Virdee, "Computer Aided Design of Ultra-Broadband 100 MHz to 20 GHz Amplifiers", Microwave Journal, February 2000.

  27. B.S. Virdee, A.S. Virdee, "2-18GHz Ultra-Broadband Amplifier Design Using A Cascaded Reactively Terminated Single Stage Distributed Concept", IEE Electronics Letters, Vol.35, No.24, 25th November 1999, pp.2122-2123. DOI: 10.1049/el:19991419

  28. A.S. Virdee, B.S. Virdee, "High Efficiency Power Amplifier Design Using GaAs HFETs", Microwave Journal, Vol.42, No.19, October 1999, pp.108-124.

  29. B.S. Virdee, "Current Techniques for Tuning Dielectric Resonators", Microwave Journal, Vol.41, No.10, October 1998, pp.130-138.

  30. B.S. Virdee, "Effective Technique for Electronically Tuning a Dielectric Resonator", IEE Electronics Letters, Vol.33, No.4, 13th Feb. 1997, pp.301-302.

  31. B.S. Virdee, L.A. Trinogga, "New Scattering Matrix Parameter Formulas for Transmission Mode Dielectric Filter Networks", IEE Electronics Letters, vol.24, No.3, Nov.1988, pp.1409-1411.

Peer Reviewed Conferences

  1. Shahram Salek Zamankhani, Algirdas Pakstas, Bal Virdee, "An Ontology Approach to Development of Inter IHS Communication Subsystem Ontology for Intrusion Handling Systems in Wireless LANs", Baltic Conference on Future Internet Communications (BCFIC 2011, http://bcfic.org/), February 2011.

  2. M. Nosrati, B. Virdee, M. Mirzaee, "Quasi Multi-Mode Resonator for Wideband Filter Applications", IEEE Proceedings of Asia-Pacific Microwave Conference, Pacifico Yokohama, Japan, 7-10 Dec. 2010, pp.1079-1081.

  3. B.S. Virdee, M. Farhat, M.N. Moghaddasi, "Ultra-Wideband Spurii-Free Quasi-Elliptic Function Filter", IEEE Proceedings of Asia-Pacific Microwave Conference, Pacifico Yokohama, Japan, 7-10 Dec. 2010, pp.1201-1204.

  4. S. Salekzamankhani, A. Pakstas, B. Virdee, "An Ontology Approach to Construction of Identification Subsystem for Intrusion Handling Systems in Wireless LANs", World Congress on Engineering (WCE) International Conference of Wireless Networks, 30 June - 2 July, 2010. ISBN: 978-988-17012-9-9. Best Paper Award.

  5. S. Salekzamankhani, A. Pakstas, B. Virdee, "Ontology Approach to Construction of Response and Management Console Subsystems for Intrusion Handling Systems in Wireless LANs", World Congress on Engineering (WCE), 30 June - 2 July, 2010. ISBN: 978-988-17012-9-9

  6. Yazgi, M., Sayginer, M., Virdee, B.S., Toker, A., Kuntman, H., "Single-Stage Travelling Wave Amplifier for Power Applications", IEEE International Conference on Optimization of Electrical and Electronic Equipment, 20-22 May 2010, pp. 949-952. ISBN: 978-1-4244-7019-8, DOI: 10.1109/OPTIM.2010.5510454.

  7. B. S. Virdee, "Wideband Improvement of Capacitively Coupled Filters", IEEE Asia-Pacific Microwave Conference, 7-10 December 2009, Singapore. DOI: 10.1109/APMC.2009.5385222

  8. B. S. Virdee, "DGP Stripline Resonator for Wideband Filter Application", IEEE Asia-Pacific Microwave Conference, 7-10 December 2009, Singapore. DOI: 10.1109/APMC.2009.5385223

  9. M. Yazgi, A.Toker, Virdee B., "A New Negative Resistance Circuit And An Application For Loss Compensation In A Distributed Amplifier", ELECO’2007 5th International Conference On Electrical And Electronics Engineering, 5 – 9 Dec. 2007, Bursa, TURKEY, pp.89-92.

  10. Virdee B., Virdee, A., "Targeted Suppression of Spurious Responses in Microstrip Bandpass Filters", Asia-Pacific Microwave Conference, 11-14 December 2007, Grand Hyatt Erawan Hotel in Bangkok, Thailand. DOI: 10.1109/APMC.2007.4554777

  11. Virdee B., Virdee, A., "Data Modulator Driver Broadband Amplifier", Asia-Pacific Microwave Conference, 11-14 December 2007, Grand Hyatt Erawan Hotel in Bangkok, Thailand. DOI: 10.1109/APMC.2007.4554972

  12. Virdee B., M. Yazgi, Virdee, A., "Bandwidth Extension of A Conventional Distributed Amplifier", Asia-Pacific Microwave Conference, 11-14 December 2007, Grand Hyatt Erawan Hotel in Bangkok, Thailand. DOI: 10.1109/APMC.2007.4554667

  13. Virdee B., M. Yazgi, Virdee, A., "Cascaded Single-Stage Amplifier With Improved Gain-Frequency Performance Using Frequency-Dependent Lossy Artificial Lines", 37th European Microwave Conference 2007, Munich, 8-12 October 2007. DOI: 10.1109/EMICC.2007.4412679

  14. Virdee B., and M. Yazgi, "Improving The Gain-Frequency Performance of Cascaded Single-Stage Distributed Amplifier With Frequency-Dependent Lossy Artificial Lines", Proc. of 3rd Int. Symposium on Electrical, Electronics and Computer Eng. (ISEECE'2006), Nicosia, Cyprus, 23-25 November 2006, pp.30-34.

  15. Virdee B.S., Virdee, A.S., "Open-Loop Folded Ring Mimics Photonic Band-Gap Device", European Microwave Conference, Manchester, England, Sept. 2006, pp.1201-1204. DOI: 10.1109/EUMC.2006.281192

  16. Virdee, B., Pakstas, A., Salekzamankhani, S., "Fighting Intrusions in Wireless LANs: A Need for the Reference Model", 2nd IEEE/IFIP International Conference in Central Asia on Internet, Sept. 2006. DOI: 10.1109/CANET.2006.279278

  17. Virdee, A.S., Virdee B.S., "Broadband Limiting Amplifier for Instantaneous Frequency Measurement System", European Microwave Conference, Manchester, England, Sept. 2006, pp.216-219. DOI: 10.1109/EUMC.2006.281275

  18. Pakstas, A., Salekzamankhani, S., Virdee, B.S., "Towards Development of a Reference Model for Intrusion Detection Systems for Wireless LANs", IEEE Globecom 2005, Workshop on Adaptive Wireless Networks, AWIN. DOI: 10.1109/CANET.2006.279278

  19. Virdee, A.S., Virdee, B.S., "Efficient HFET Power Amplifier", 35th European Microwave Conference, Paris, France, September 2005, pp.309-312. DOI: 10.1109/EUMC.2005.1608855

  20. Virdee, B.S., Virdee, A.S., "Photonic Bandgap Folded Microstrip Ring", Asia-Pacific Microwave Conference (APMC), New Delhi, India, December 2004, pp.840- .

  21. Virdee, B.S., Virdee, A.S., "X-Band High Efficiency Power Amplifier", Asia-Pacific Microwave Conference (APMC),New Delhi, India, December 2004, pp.762- .

  22. Virdee, B.S., Grassopoulos, C., "Aperture Coupled Microstrip Resonator", Asia-Pacific Microwave Conference (APMC), New Delhi, India, December 2004, pp.131- .

  23. Virdee, B.S., Banyamin, B., "Digital Pre-distortion Linearizer", 34th European Microwave Conference, Oct. 2004, Amsterdam, Netherlands.

  24. Virdee, B.S., Grassopoulos, C., “Defected Ground Plane Microstrip Resonator”, 34th European Microwave Conference, Oct. 2004, Amsterdam, Netherlands.

  25. Virdee, A.S., Virdee, B.S., "Novel Broadband Coupler for Detection of RF Signals in Microwave Systems", 34th European Microwave Conference, Oct. 2004, Amsterdam, Netherlands.

  26. Virdee, B.S., Liu, W.Y., "On-chip Cooling of RFICs and MICs", 34th European Microwave Conference, Oct. 2004, Amsterdam, Netherlands.

  27. Virdee B.S., Grassopoulos, C., "Folded Ring Microstrip Filter", 33rd EuMC, 6-10 Oct. 2003, Munich, Germany, pp.151-154. DOI: 10.1109/EUMA.2003.340912

  28. Virdee B.S., Grassopoulos, C.,"Folded Microstrip Resonator", 2003 IEEE Int. Microwave Symposium, Philadelphia, Pennsylvania, June 8-10, 2003.

  29. Virdee, A.S., Virdee B.S., "Single-Ended Amplifier that Substantially Improves PAE and Ultra-Broadband Performance", 2003 IEEE Int. Microwave Symposium, Philadelphia, Pennsylvania, June 8-10, 2003.

  30. Virdee B.S., Virdee, A.S., Trinogga, L.A., "Novel Invasive Electronic Tuning of Dielectric Resonators", 2003 IEEE Int. Microwave Symposium, Philadelphia, Pennsylvania, June 8-10, 2003.

  31. Virdee B.S., Grassopoulos, C., "Half-Ring Microstrip Resonator", 2002 Asia-Pacific Microwave Conference (APMC), Kyoto, Japan, November 2002.

  32. Virdee B.S., Virdee, A.S., "30 KHz-40 GHz Amplifier for Optical Application", Asia-Pacific Microwave Conference (APMC), Kyoto, Japan, November 2002.

  33. Virdee B.S., Grassopoulos, C., "Novel Half-Ring Microstrip Resonator", European Microwave Conference 2002, Milan, Italy, September 2002. DOI: 10.1109/EUMA.2002.339388

  34. Virdee B.S., Virdee, A.S., Banyamin, B., "Bandwidth and Efficiency Improvements in Cascaded Single-Stage Distributed Amplifier", European Microwave Conference 2002, Milan, Italy, September 2002. DOI: 10.1109/EUMA.2002.339392

  35. Virdee B.S., Banyamin, B., "Digital Predistortion Lineariser for Third Generation Cellular Base Stations", European Conference on Wireless Technology 2002, Milan, Italy, September 2002.

  36. Virdee, A.S., Virdee B.S., "Multioctave Cascaded Reactively Terminated Single-Stage Distributed Amplifier Design for High-Gain and Reduced Power Consumption for Optical Application", Wireless Design Conference, Thursday 16th May 2002, London, UK, pp.177-180. Sponsored by IEEE & Microwave Engineering.

  37. Virdee, A.S., Virdee B.S., "Novel Current Sharing Concept Improves Efficiency of Broadband Feedback Amplifiers", 31st European Microwave Conference, Excel, Docklands, London, England, 24-28 September 2001. Sponsored by IEE & IEEE. DOI: 10.1109/EUMA.2001.338968

  38. Virdee B.S., Virdee, A.S., "Novel High Dynamic Range Amplifier for Broadband Communication Systems", 31st European Microwave Conference, Excel, Docklands, London, England, 24-28 September 2001. Sponsored by IEE & IEEE. DOI: 10.1109/EUMA.2001.339191

  39. Virdee, B.S., Virdee, A.S., "A Novel High Efficiency Multioctave Amplifier Using Cascaded Reactively Terminated Single-Stage Distributed Amplifiers for EW System Applications", Microwave Symposium Digest, 2001 IEEE MTT-S International, Vol. 1, May 2001, pp.519 – 522. DOI: 10.1109/MWSYM.2001.966945

  40. Virdee B.S., Trinogga, L.A., "Single-Ended Power Amplifier Design Using 4.8 mm Gate Width Heterostructure FET Device For High Efficiency Performance", 11th Int. Conference on Microwave & Telecommunication Technology, Sep. 10-14, 2001, Sevastopol, Crimea, Ukraine, pp.130-132. DOI: 10.1109/CRMICO.2001.1173731

  41. Virdee, A.S., Virdee B.S., "Novel High Efficiency Multioctave Amplifier Using Cascaded Reactively Terminated Single-Stage Distributed Amplifiers for EW System Applications", IEEE MTTS-Int.Microwave Symposium, Phoenix, Arizona USA, 20-25 May 2001. DOI: 10.1109/MWSYM.2001.966945

  42. Virdee, A.S., Virdee B.S., "Amplifier Design for High Efficiency Performance", IEE Colloquium on Microwave and Power Amplifiers, Thurs. 7 Dec. 2000, IEE Savoy Place.

  43. Virdee B.S., Virdee, A.S., "High Efficiency Hybrid Power Amplifier Design Using Heterostructure Field Effect Transistors", Asia-Pacific Microwave Conference, Sydney, Australia, 3-6 Dec.2000. Sponsored by IEEE, MTT-S, CSIRO. DOI: 10.1109/APMC.2000.926009

  44. Virdee, B.S., Virdee, A.S., "Multi-Octave 200MHz to 20GHz Amplifier For Extended Range Digital Log Video Amplifier Application", IEEE MTTS-Int. Microwave Symposium, Boston, Massachusetts, 11th-16th June 2000, pp.1329-1332. DOI: 10.1109/MWSYM.2000.861765

  45. Virdee, B.S., "Tunable Dielectric Resonator Bandpass Filters", Asia-Pacific Microwave Conference-APMC'98, Dec.8-11, 1998, pp.1353-1357. Pacifico Yokohama, Yokohama, Japan, Sponsored by The Institute of Electronics, Information and Communications Engineers, Co-sponsored by IEEE MTT-S.

  46. Virdee, B.S., "Design Method Produces Direct-Coupled DR Filters", Microwave & RF, December 1997, pp.147-150.

  47. L.A. Trinogga, B.S. Virdee, "Dielectric Oscillator Invasive Tuning", 6th International Crimean Conference on “Microwave & Telecommunications Technology”, Sevastopol, Ukraine,16-19th September 1996.

  48. Virdee, B., "Current Techniques for Electronically Tuning Dielectric Resonators", Asia-Pacific Microwave Conference-APMC'96, New Delhi, India. Sponsored by The Institute of Electronics, Information and Communications Engineers, Co-sponsored by IEEE-Symp., Dec.12-16 1996, pp.1113-1118.

  49. Virdee, B., "Novel Electronically Tunable DR Bandstop Filter", 1995 SMBO/IEEE Microwave Theory & Techniques Symposium International Microwave and Optoelectronics Conference, Rio de Janeiro, July 24-27 1995, Brazil. DOI: 10.1109/SBMOMO.1995.509681

  50. Virdee, B.S., "Microwave Pulsed DRO Using A Dual-Gate MESFET", The Proceeding of the First International Conference on Electronics, Circuits and Systems, Cairo, Egypt, vol.2, Dec.19-22 1994, pp.1022-1027, Co-sponsored by IEEE and The Ohio State University.

  51. Virdee, B., "Investigation of Different Microstrip Topologies for Tuning DR TE01δ mode Resonant Frequency", Asia-Pacific Microwave Conference-APMC’94, Nippon Convention Center, Tokyo, Japan, Dec.6-9 1994, pp.773-779. Sponsored by The Institute of Electronics, Information and Communications Engineers, Co-sponsored by IEEE-Symp.

  52. Virdee, B.S., et al, "Computer Aided Design Eases DRO Design", Asia-Pacific Microwave Conference, Hsinchu, Taiwan, 18-21 Oct. 1993, pp15.27-15.32. Sponsored by The Institute of Electronics, Information and Communications Engineers, Co-sponsored by IEEE-Symp. ISBN: 0 7803 1352 6.

  53. Virdee, B.S., Parsons, A.J.; Meadows, R.G., "Commercial Computer-Aided Design Software Optimises DRO Circuit Design", 1993 SBMO International Microwave Conference/Brazil Proceedings, Sao Paulo, August 2-5, 1993, pp.457-462. Co-sponsored by IEEE MTT-S, IEEE AP-S, IEE, IEEE Catalog No. 93TH0555-3.

  54. Virdee, B., et al, "A Highly Stabilised Transistor DRO Design Using CAD", Recent Advances in Microwave Technology, Wiley Eastern Limited, 1993, pp.689-692. ISBN: 81 224 0588 6.

  55. Virdee, B.S., "Electronic Tuning of a Parallel Feedback DRO", 1991 Sociedade Brasileira de Microondas (SBMO) International Microwave Conference, Rio de Janeiro, Brazil, 22-25 July, pp.516-523. Co-sponsored by IEEE MTT-S, IEEE AP-S, and IEE. ISBN: 621.3813.

  56. Virdee, B.S., Trinogga, L.A.; Nakhwal, J.S., "An Integrated mm-wave Source for Fixed/Mobile Application", IEE Colloquium on Radio-communications, invited paper, April 1989.

  57. Virdee, B.S., Trinogga, L.A.; Nakhwal, J.S., "Microwave Measurement of Properties of Ceramic Materials for use as Dielectric Resonators", Asia-Pacific Microwave Conference, Beijing, China, Oct. 26-28, 1988, pp.405-406. Sponsored by The Institute of Electronics, Information and Communications Engineers, Co-sponsored by IEEE-Symp.
 


 
 
  Page last updated : : 16 Jun 2011