Professor Bal Virdee

 

 


 

Professor Bal Virdee  

Professor of microwave technology

Professor 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 Teledyne Defence (formerly Filtronic Components Ltd., Shipley, West Yorkshire), and at PYE TVT (Philips) in Cambridge. He has held numerous duties and responsibilities at the university, ie: Health & Safety Officer, Postgraduate Tutor, Examination’s Officer, Admission’s Tutor, Short Course Organiser, Course Leader for MSc/MEng Satellite Communications, BSc Communications Systems and BSc Electronics. In 2010 he was appointed Academic Leader (UG Recruitment). He is a member of ethical committee, member of the school's research committee, and research degrees committee.

Professional memberships

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

Professor Bal Virdee is the module leader for Microwave and Optical Fibre Communications, Satellite Communications, and Microwave and Optical Communications. He is also a module tutor on Mobile Communications Systems and Traffic Engineering. Professor Virdee acts as Director of The Centre for Communications Technology. He is the Chair of the Communications Technology Postgraduate Course Committee and an IET Executive Member of the Technical Professional Network Committee.

Research interests

Professor Bal Virdee's 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.

Professor Bal Virdee’s research is in the area of microwave wireless communications encompassing 5G Mobile phones to satellite technology. He has supervised several PhD research students to completion and is currently supervising five PhDs. He has published over a hundred peer reviewed papers, including 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, including from 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 on the Editorial Boards for the Far East Journal of Electronics and Communications, the International Journal of RF and Microwave Computer-Aided Engineering, and IAEng. He was also a guest editor for the International Journal of Antennas and Propagation, Hindawi Publishing Corporation. In addition, he is the Program Committee and 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). 

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 School, 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. Professor Virdee 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 prolonging battery life of wireless communications handheld devices. 

Professor Bal Virdee has also developed and run continuing professional development (CPD) courses in response to the demand made by industry – in particular, specialist five-day short courses in:

  • Microwave Components and Devices
  • Microwave Communications Systems
  • Microwave Dielectric Resonator Oscillator Design
  • Antennas &andMeasurement 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 and microprocessors-based Engineering. He is also an external examiner at Leeds Metropolitan University.

Past roles

  • Academic leader (undergraduate recruitment)
  • Industrial liaison group coordinator
  • Course leader for Mobile and Satellite Communications MSc/MEng, Electronics BSc, and Communications Systems BSc

Book

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

Journals

  1. M. Alibakhshi-Kenari, M. Naser-Moghadasi, R. A. Sadeghzadeh, B. S. Virdee, E. Limiti, A. Andújar and J. Anguera, “New Compact Antenna Based on Simplified CRLH-TL for UWB Wireless Communication Systems,” International Journal of RF and Microwave Computer-Aided Engineering, Vol. 26, Issue 3, March 2016, pp. 217-225. DOI: 10.1002/mmce.20956
  2. M. Naser-Moghadasi, Z. Mansouri, S. Sharma, F. B. Zarrabi and B. S. Virdee, “Low SAR PIFA Antenna for Wideband Applications,” IETE Journal of Research, Feb 2016, pp.1-7.  http://www.tandfonline.com/doi/full/10.1080/03772063.2015.1135300  DOI: 10.1080/03772063.2015.1135300
  3. Z. Amiri, S. Movagharnia, M. Masoumi, M. Shokry, and B. S. Virdee, “Extremely Wideband Printed Monopole Antenna with Dual Rejection Bands,” Microwave and Optical Technology Letters, Vol. 58, No. 4, April 2016, pp. 908-911. DOI 10.1002/mop
  4. M. Masoumi, Z. Amiri, F. Ghaedi, A. Sahraban, S. Hayati, M. Shokry, and B. S. Virdee, “Miniaturized Planar Ultrawideband Slot Antenna with an Interference Suppressing Capability,” Microwave and Optical Technology Letters, Vol. 58, No. 4, April 2016, pp. 813-817. DOI 10.1002/mop
  5. M. Alibakhshi-Kenari, M. Naser-Moghadasi, R. A. Sadeghzadeh, B. S. Virdee, E. Limiti, Dual-Band RFID Tag Antenna Based on the Hilbert-Curve Fractal for HF and UHF Applications,” IET Circuits, Devices & Systems, 2016. DOI: 10.1049/iet-cds.2015.0221
  6. Mohammad Alibakhshi-Kenari, Mohammad Naser-Moghadasi, Ramazan Ali Sadeghzadeh and Bal Singh Virdee, “Metamaterial-Based Antennas for Integration in UWB Transceivers and Portable Microwave Handsets,” International Journal of RF and Microwave Computer-Aided Engineering, Vol.26, Issue 1, pp.88-96, Jan. 2016. DOI: 10.1002/mmce.20942
  7. A. Dadgarpour, B. Zarghooni, B. S. Virdee, and T. A. Denidni, “One and twoDimensional Beam-Switching Antenna for Millimeter-Wave MIMO Applications,” IEEE Transactions on Antennas and Propagation, Vol. 64, Issue 2, 2016, pp. 564-573. DOI: 10.1109/TAP.2015.2508478
  8. R. Bayderkhani, K. Forooraghi,E. Arnieri,B. Abbasi-Arand, and B. Virdee, “Analysis of an Integrated Lens Antenna Fed by SIW Slot Array Using a Hybrid MoM-PO Method,” International Journal of Microwave and Wireless Technologies. 9 Dec. 2015. DOI: http://dx.doi.org/10.1017/S1759078715001713
  9. Saeid Karamzadeh, Vahid Rafii, Mesut Kartal, and Bal S. Virdee, “Compact and Broadband 4×4 SIW Butler Matrix With Phase and Magnitude Error Reduction,” IEEE Microwave and Wireless Components Letters, Vol. 25, Issue 12, 2015, pp. 772-774. DOI: 10.1109/LMWC.2015.2496785
  10. A. Dadgarpour, B. Zarghooni, B. S. Virdee and T. A. Denidni, “Improvement of Gain and Elevation Tilt-Angle Using Metamaterial Loading for Millimeter Wave Applications,” IEEE Antennas and Wireless Propagation Letters, Vol.15 2016, pp.418-420. DOI: 10.1109/LAWP.2015.2449235
  11. A. Dadgarpour, B. Zarghooni, B.S. Virdee and T.A. Denidni, “Enhancement of Tilted Beam in Elevation Plane for Planar End-Fire Antennas Using Artificial Dielectric Medium,” IEEE Trans. Antenna & Prop., Vol. 63, Issue 10, 2015, pp.4540-4545. DOI: 10.1109/TAP.2015.2456937
  12. L. W. Y. Liu, B. S. Virdee, and J. Inal, “Microfabrication of Conical Micro-funnels for Drug Delivery Applications,” Micro & Nano Letters, Vol.10, Issue 7, pp. 355 – 357, 2015. DOI: 10.1049/mnl.2014.0659.
  13. M. Naser-Moghadasi, R. A. Sadeghzadeh, R. K. M. Lou, B. S. Virdee, T. Aribi, “Semi Fractal Three Leaf Clover-Shaped CPW Antenna for Triple Band Operation,”  Int. Journal of RF and Microwave Computer-Aided Engineering, vol. 25, issue 5, June 2015, pp. 413-418. DOI: 10.1002/mmce.20875
  14. A. Dadgarpour, B. Zarghooni, B.S. Virdee, T.A. Denidni, “High-Gain End-Fire Bow-Tie Antenna Using Artificial Dielectric Layers,” IET Microwaves Antennas & Propagation, Vol. 9, Issue 12, pp. 1254-1259, 2015. Online ISSN 1751-8733. DOI: 10.1049/iet-map.2014.0514 
  15. M. Alibakhshi-Kenari1, M. Naser-Moghadasi, B.S. Virdee, A. Andújar and J. Anguera, “Compact Antenna Based on a Composite Right/Left-Handed Transmission Line,” Microwave and Optical Technology Letters, Vol. 57, Issue 8, pp. 1785–1788, August 2015. DOI: 10.1002/mop.29191
  16. Dadgarpour, A., Zarghooni, B., Virdee, B., Denidni, T., “Beam-Deflection Using Gradient Refractive-Index Media for 60 GHz End-Fire Antenna,” IEEE Trans. on Antennas and Propagation, Vol. 63, Issue 8, 2015, pp.3768-3774. DOI: 10.1109/TAP.2015.2438396
  17. F. Ahmadi, A. Namiranian and B. Virdee, “Design and Implementation of a Single Layer Circularly Polarized Reflectarray Antenna with Linearly Polarized Feed,” Electromagnetics, Vol. 35, Issue 2, 26 Jan 2015, pp. 93-100. DOI: 10.1080/02726343.2014.987637
  18. Amin Honarvar, Naeemehsadat Hamidi and Bal S. Virdee, “Multiband Antenna for Portable Device Applications,” Microwave and Optical Technology Letters, Vol. 57, Issue 4, April 2015, pp. 956–959. DOI: 10.1002/mop.28994
  19. Dadgarpour, A., Zarghooni, B., Virdee, B.S., Denidni, T.A., “Millimeter-Wave High-Gain SIW End-Fire Bow-Tie Antenna,” IEEE Transactions on Antennas and Propagation, Vol. 63, No. 5, 2015, pp. 2337-2342. DOI: 10.1109/TAP.2015.2406916
  20. Seyyed Jamal Borhani, M. Amin Honarvar, Bal S.Virdee, “High Selectivity UWB Bandpass Filter with a Wide Notched-Band,” Microwave and Optical Technology Letters, Vol. 57, Issue 3, March 2015, pp. 634-639, March 2015. DOI: 10.1002/mop.28917
  21. Majid Shokri, Vahid Rafii, Saeid Karamzadeh, Zhaleh Amiri and Bal Virdee, “CPW-Fed Printed UWB Antenna with Open-Loop Inverted Triangular-Shaped Slot for WLAN Band Filtering,” International Journal of Microwave and Wireless Technologies. Cambridge Journals, Cambridge University Press, Published online: 08 January 2015. DOI: http://dx.doi.org/10.1017/S1759078714001445
  22. Saeid Karamzadeh, Bal. S. Virdee, Vahid Rafii, Mesut Kartal, “Circularly Polarized Slot Antenna Array with Sequentially Rotated Feed Network for Broadband Application,” International Journal of RF and Microwave Computer-Aided Engineering, first published online 6 Nov 2014, pp. 1-6. DOI: 10.1002/mmce.20869
  23. H. Asadbeigi, B. S. Virdee, “Compact Notch Filter Design Using Stepped Impedance Resonators for Sharp Roll-Off and Large Wideband Rejection,” International Journal of RF and Microwave Computer-Aided Engineering, first published online, first published online 9 Dec 2014. DOI: 10.1002/mmce.20883
  24. Mohammad Naser-Moghadasi, Ramazan Ali Sadeghzadeh, Reza Khajeh Mohammad Lou, Bal. Singh Virdee, Tohid Aribi, “Semi Fractal Three Leaf Clover-Shaped CPW Antenna for Triple Band Operation,” International Journal of RF and Microwave Computer-Aided Engineering, first published online 9 DEC 2014, DOI: 10.1002/mmce.20875
  25. M.A. Honarvar, N. Hamidi,B.S. Virdee, Multiband Antenna for Portable Device Applications,” Microwave and Optical Technology Letters, Vol. 57, Issue 4, April 2015, pp. 956-969. DOI: 10.1002/mop.28994
  26. M. Shokri, V. Rafii, S. Karamzadeh, Z. Amiri, B. Virdee, “Miniaturised ultra-wideband circularly polarised antenna with modified ground plane,” Electronics Letters, Vol. 50, Issue 24, 20 Nov. 2014, p. 1786 – 1788. DOI:  10.1049/el.2014.3278
  27. M. Shokri, Z. Amiri, S. Asiaban, B. Virdee, “Diamond Shaped Ring Antenna for UWB Applications with Inherent Band-Notched Functionality,” ACES Journal, Vol. 29, No. 11, Nov. 2014.
  28. Farzaneh Ahmadi, Keyvan Forooraghi, Zahra Atlasbaf and Bal Virdee, “Bandwidth Enhancement of Dielectric Resonator Reflectarray Antenna,” Electromagnetics (Taylor & Francis Journal), Sep. 2014, pp. 513-521. DOI: 10.1080/02726343.2014.936299
  29. Karamzadeh, S., Rafii, V., Kartal, M., Ucan, O.N., Virdee, B.S., “Circularly Polarised Array Antenna with Cascade Feed Network for Broadband Application in C-Band,” Electronics Letters, Vol. 50, Issue 17, 2014, pp. 1184-1186. DOI: 10.1049/el.2014.1147 
  30. Asadbeigi, H., Virdee, B.S., “Miniature Wideband Bandpass Filter Based on Electric and Magnetic Coupling Paths,” Electronics Letters, Vol. 50, Issue 12, 2014, pp. 879-881. DOI: 10.1049/el.2014.0927 
  31. Majid Shokri , Zhale Amiri, Mostafa Pilevari, Masoume Masoumi,  Somayeh Asiaban, and Bal Virdee, “Compact UWB Antenna with Dual Functionality,” ACES Journal, Vol. 29, No. 7, July 2014, pp. 479-485. ISSN: 1054-4887
  32. M. Mirzaee, S. Noghanian, B. Virdee, “High Selectivity UWB Bandpass Filter with Controllable Bandwidth of Dual Notch-Bands,” Electronic Letters, Vol. 15, Issue 19, Sept. 2014, pp. 1358-1359. DOI: 10.1049/el.2014.2336
  33. Abdolmehdi Dadgarpour, Behnam Zarghooni, Bal S.Virdee and Tayeb A. Denidni, “Beam Tilting Antenna using Integrated Metamaterial Loading,” IEEE Transactions on Antennas and Propagation, Vol. 62, No. 1, May 2014, pp. 2874-2879. DOI: 10.1109/TAP.2014.2308516
  34. Abdolmehdi Dadgarpour, Farid Jolani, Yiqiang Yu, Zhizhang Chen, 
    Tayeb A. Denidni, Bal S. Virdee, “A Compact Balanced Antipodal Bow-Tie Antenna Having Double Notch-Bands,” Microwave and Optical Technology Letters, Vol. 56, No. 9, Sept. 2014, pp. 2010-2014. DOI 10.1002/mop.28517
  35. Milad Mirzaee and Bal S. Virdee, “Compact Lowpass Filter With High Out-Of-Band Rejection and Superwide Stopband Performance,” Microwave And Optical Technology Letters, Vol. 56, Issue 4, April 2014, pp. 947–950. DOI: 10.1002/mop.28209
  36. Milad Mirzaee, Bal S. Virdee and Sima Noghanian, “Compact Ultra-Wideband Bandpass Filter With Variable Notch Characteristics Based on Transversal Signal-Interaction Concepts,” International Journal of RF and Microwave Computer-Aided Engineering, 6 Jan 2014. DOI: 10.1002/mmce.20798
  37. Hamed Shirzad, Majid Shokri, Zhaleh Amiri, Somayeh Asiaban and Bal Virdee, “Wideband Circularly Polarized Square Slot Antenna with an Annular Patch,” Microwave and Optical Technology Letters, Vol. 56, Issue 1, January 2014, pp. 229–233. DOI: 10.1002/mop.28016
  38. Majid Shokri, Hamed Shirzad, Sima Movagharnia, Bal Virdee, Zhale Amiri, and Somayeh Asiaban, “Planar Monopole Antenna With Dual Interference Suppression Functionality”, IEEE Antennas And Wireless Propagation Letters, Vol. 12, 2013, pp.1554-1557. DOI: 10.1109/LAWP.2013.2292921 
  39. Farzaneh Ahmadi, Keyvan Forooraghi, Zahra Atlasbaf and Bal Virdee, “A New Dielectric Resonator Antenna Element for Circularly Polarized Reflectarray Antenna,” Electromagnetics, Vol. 33, Issue 8, 2013, pp. 575-582. DOI: 10.1080/02726343.2013.835670
  40. M. Mirzaee and B. S. Virdee, Realisation of Highly Compact Planar Lowpass Filter for UWB RFID Applications,” Electronics Letters, Vol. 49, Issue 22, 24 October 2013, pp. 1396 – 1398. DOI: 10.1049/el.2013.2409, Print ISSN 0013-5194, Online ISSN 1350-911X
  41. M. Naser-Moghadasi, R. A. Sadeghzadeh, R. Khajeh MohammadLou, M. Jalali, and B. S. Virdee, “Miniature Planer Monopole Antenna with Dual-Band Rejection Characteristics for UWB Applications,” Microwave and Optical Technology Letters, vol.55, no.3, Sept. 2013, pp.1977-1981. DOI: 10.1002/mop.27771
  42. H. Shahsavari, J. Nourinia, H. Shirzad, M. Shokri, S. Asiaban, Zh. Amiri and B. Virdee, “Compact Planar Super-Wideband Antenna with Band-Notched Function,” ACES journal, ACES journal, vol.  28, no. 7, July 2013, pp.608-613.
  43. F. Ahmadi, K. Forooraghi, Z. Atlasbaf, B. Virdee, “Dual Linear Polarized Dielectric Resonator Antenna Reflectarray,” IEEE Antennas and Wireless Propagation Letters, vol. 12, April 2013, pp. 635-638. DOI:10.1109/LAWP.2013.2259611
  44. H. Shirzad, B. Virdee, Ch. Ghobadi, M. Shokri, T. Sedghi, S. Asiabanand J. Pourahmadazar, Bandwidth Enhancement of Small Planar Microstrip Antenna with a Pair of Rectangular Ring-Shaped slots on Patch,” Applied Computational Electromagnetics Society(ACES) Journal, vol. 28, no.5, May 2013, pp.441-445. ISSN: 1054-4887
  45. M. Naser-Moghadasi, R. Sadeghzadeh, L. Asadpor, and B.S. Virdee, A Small Dual-Band Dual-Polarized CPW-Fed Monopole Antenna for GSM and WLAN Applications,” IEEE Antennas and Wireless Propagation Letters, vol. 12, 2013, pp. 508-511. DOI: 10.1109/LAWP.2013.2256456
  46. M. Naser-Moghadasi, R. A. Sadeghzadeh, T. Sedghi, T. Aribi, and B. S. Virdee, “UWB CPW-Fed Fractal Patch Antenna With Band-Notched Function Employing Folded T-Shaped Element,” IEEE Antennas and Wireless Propagation Letters, vol. 12, 2013, pp. 504-507. DOI: 10.1109/LAWP.2013.2256455
  47. Mirzee, M., Virdee, B.S., “UWB bandpass filter with notch-band based on transversal signal-interaction concepts,” Electronics Letters, Vol. 49, Issue 6, March 2013, pp. 399-401. DOI: 10.1049/el.2012.4203
  48. M. Sayginer, M. Yazgi, H.H. Kuntman, B.S. Virdee, “1–8 GHz High Efficiency Single-Stage Travelling Wave Power Amplifier,” Analog Integrated Circuits and Signal Processing​, Vol. 74, Issue 1, 2013, pp. 111–119. 
    DOI 10.1007/s10470-012-9863-2
  49. Milad Mirzaee and Bal S. Virdee, “Wide Filter Stopband Aids UWB Systems,” RF&Microwaves, Dec. 28, 2012.
  50. Vahid Rafii, J. Nourinia, Ch. Ghobadi, Javad Pourahmadazar and Bal S. Virdee, “Broadband Circularly Polarized Slot Antenna Array Using Sequentially Rotated Technique for C-Band Applications,” IEEE Antennas and Wireless Propagation Letters, Vol.12, Jan. 2013, pp. 128-131. DOI:10.1109/LAWP.2013.2237744
  51. K.U. Ahmed and B.S. Virdee, “Ultra-Wideband Bandpass Filter Based on Composite Right/Left Handed Transmission-line Unit-Cell,” IEEE Transactions on Microwave Theory and Techniques, Vol. 61(2), Feb. 2013, pp. 782-788. DOI:10.1109/TMTT.2012.2231432
  52. Kafil U Ahmed and Bal S Virdee, “Fine Control of Filter Performance Based On Composite Right/Left-Handed Metamaterial Technology,” International Journal of RF and Microwave Computer-Aided Engineering, Online version Jan. 2013. DOI: 10.1002/mmce.20710
  53. M. Naser-Moghadasi, R.A. Sadeghzadeh, M. Fakheri, T. Aribi, T. Sedghi, B.S. Virdee, “Miniature Hook-Shaped Multiband Antenna for Mobile Applications,” IEEE Antennas and Wireless Propagation Letters, Vol. 11, 2012, pp. 1096-1099. DOI: 10.1109/LAWP.2012.2214199
  54. M. Naser-Moghadasi, R.A. Sadeghzadeh, T. Aribi, T. Sedghi and B.S. Virdee, “UWB Monopole Microstrip Antenna Using Fractal Tree Unit-Cells,” Microwave and Optical Technology Letters, Vol. 54, No. 10, October 2012, pp. 2366-2370. DOI 10.1002/mop
  55. M. Naser-Moghadasi, R.A. Sadeghzadeh, S. YazdaniFard, Bal S. Virdee, Microstrip Low-Pass Filters by Using DGS with Folded T-Shaped Arms,”Advanced Computational Techniques in Electromagnetics (ISPACS journal), Vol. 2012, 2012, Article ID acte-00122, 5 pages, DOI: 10.5899/2012/acte-00122
  56. M. Naser-Moghadasi, G. Dadashzadeh, M.R. Haraty, S.M. Momeni and B.S. Virdee, “Novel Compact UWB Antenna With Reconfigurable Dual-Band Notches Using PIN Diode Switches Actuated Without lg/4 dc Bias-Lines,” Microwave and Optical Technology Letters, Vol. 54, No. 10, October 2012, pp.2392-2397. DOI 10.1002/mop
  57. M. Naser Moghadasi, B.S. Virdee, “A Novel Compact Ultra-Wideband Dual Notch Microstrip Antenna”, Electromagnetics, Taylor & Francis, Vol. 32, Issue 5, July 2012, pp. 255-265. DOI: 10.1080/02726343.2012.686830
  58. M. Naser-Moghadasi, M. Alamolhoda, B. Rahmati, Bal S. Virdee, “Ultra-Wideband Omnidirectional Top-Loaded Rolled Planar Monopole Antenna with Truncated Conical Ground-Plane,” Electromagnetics, 32, pp. 233–243, 2012. ISSN: 0272-6343 print/1532-527X online, DOI:10.1080/02726343.2012.672043
  59. M. Naser-Moghadasi, L. Asadpor, B.S. Virdee, “Compact Ultra-Wideband Slot Antenna with Band-Notch Property”, Microwave and Optical Technology Letters (Wiley Journal), Vol. 54, No. 8, pp. 1829-1832 Aug 2012. DOI 10.1002/mop.
  60. M.A. Honarvar, F. Jolani, A. Dadgarpour, B.S.Virdee, Compact Wideband Phase Shifter,” International Journal of RF and Microwave Computer-Aided Engineering, Vol. 23, Issue 1, May 2012, pp.47-51. DOI: 10.1002/mmce.20649
  61. A.R. Eskandari, M. Naser-Moghaddasi, Bal S. Virdee, “Target Identification Enhancement using a Combination of Linear Sampling Method and Adjoint Sensitivity Analysis,” IET Microwaves, Antennas & Propagation, Vol.6, Issue 4, pp. 461 – 469, 2012. DOI: 10.1049/iet-map.2011.0303
  62. A.A. Kalteh, G.R. DadashZadeh, M. Naser-Moghadasi, and B.S. Virdee, “Ultra-wideband circular slot antenna with reconfigurable notch band function,” IET Microw. Antennas Propag., Vol.6, Issue 1, p.108–112, January 2012. DOI: http://dx.doi.org/10.1049/iet-map.2011.0125. ISSN: 1751-8725 (print) and 1751-8733 (online)
  63. M. Zamani, M. Taghizadeh, M. Naser-Moghadasi and B.S.Virdee, “A 5th-Order ΣΔ Modulator with Combination of Op-Amp and CBSC Circuit for ADSL Applications”, Analog Integrated Circuits and Signal Processing, Vol. ?, Issue ?, 3rd September 2011, pp. 143-150. DOI: 10.1007/s10470-011-9763-x
  64. M. Koohestani, M.Naser Moghadasi, B.S. Virdee, “Miniature Microstrip-Fed Ultra-Wideband Printed Monopole Antenna with a Partial Ground-Plane Structure”, IET Microwaves, Antennas & Propagation, Vol.5, Issue 14, Nov. 2011, pp.1683-1689. DOI:10.1049/iet-map.2010.0450
  65. Mehdi Nosrati, Mojgan Daneshmand and Bal S. Virdee, “Novel Compact Dual-Narrow/Wideband Branch-Line Couplers Using T-Shaped Stepped-Impedance-Stub Lines”, International Journal of RF and Microwave Computer-Aided Engineering, Vol. 21, Issue 6, November 2011, pp. 642-649. DOI: 10.1002/mmce.20559
  66. M. Naser-Moghadasi, R.A. Sadeghzadeh, R. HafeziFard, S. YazdaniFard and Bal S. Virdee, “Highly Compact Meander Line Antenna Using DGS Technique For WLAN Communication Systems”, IEICE Electronics Express, Vol.8, No.10, May 25, 2011, pp. 722-729. DOI:10.1587/elex.8.722.
  67. 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.
  68. 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.
  69. 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.
  70. 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
  71. 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.
  72. 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.
    DOI:10.2528/PIERL1003260
  73. 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. 
    DOI: 10.2528/PIERC10031302
  74. 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. DOI:10.2528/PIERC10031303
  75. 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.
  76. 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.
  77. 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.
  78. 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.
  79. 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.
  80. 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.
  81. 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
  82. 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.
  83. 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.
  84. 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
  85. M. Yazgı, 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
  86. 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  
  87. 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
  88. 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
  89. 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.
  90. Virdee, A.S., Virdee, B.S., “Experimental performance of ultra broadband 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
  91. A.S. Virdee, B.S. Virdee, “Computer Aided Design of Ultra-Broadband 100 MHz to 20 GHz Amplifiers”, Microwave Journal, February 2000.
  92. B.S. Virdee, A.S. Virdee, “2-18GHz Ultra-Broadband Amplifier Design Using A Cascaded Reactively Terminated Single Stage Distributed ConceptIEE Electronics Letters, Vol.35, No.24, 25th November 1999, pp.2122-2123. DOI: 10.1049/el:19991419
  93. A.S. Virdee, B.S. Virdee, “High Efficiency Power Amplifier Design Using GaAs HFETsMicrowave Journal, Vol.42, No.19, October 1999, pp.108-124.
  94. B.S. Virdee, “Current Techniques for Tuning Dielectric Resonators”,Microwave Journal, Vol.41, No.10, October 1998, pp.130-138.
  95. B.S. Virdee, “Effective Technique for Electronically Tuning a Dielectric Resonator”, IEE Electronics Letters, Vol.33, No.4, 13th Feb. 1997, pp.301-302. 
  96. 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. M. Farhat, K.U. Ahmed, B.S. Virdee, “Novel Microstrip Bandpass Filter With Ultra Wide Stopband,” German Microwave Conference, 12-14 March 2012, pp.29-32. ISBN: 978-3-9812668-5-6
  2. K.U. Ahmed, B.S. Virdee, M. Farhat, Triplexer Based on Composite Left/Right Handed Transmission line,” German Microwave Conference, 12-14 March 2012, pp.46-49. ISBN: 978-3-9812668-5-6
  3. M. Saygýner, M. Yazgý, H. Kuntman and B.S. Virdee, “8 GHz High Efficiency Single Stage Travelling Wave Power Amplifier”, Proc. of ELECO 2011: The 7th International Conference on Electrical and Electronics Engineering, pp.75-78, 1-4 December 2011, Bursa, Turkey.
  4. Sayginer, M., Yazgi, M.,Toker, A.,Kuntman, H.,Virdee, B.S.,“Decade Bandwidth Single and Cascaded Travelling Wave Medium Power Amplifiers Using SiGe HBTS”, 20th European Conference on Circuit Theory and Design (ECCTD), Aug. 2011 , pp.850 – 853, E-ISBN: 978-1-4577-0616-5, ISBN: 978-1-4577-0617-2, DOI: 10.1109/ECCTD.2011.6043833
  5. Bal S. Virdee, Mohamad Farhat, Kafil U. Ahmed, “Compact Quasi-Elliptic Bandpass Filter”, IEEE Asia-Pacific Microwave Conference, Pacifico Yokohama, Melbourne, 5-8 Dec. 2011, pp.1051-1053.
  6. Bal S. Virdee, Mohamad Farhat, Kafil U. Ahmed, “Dual-Band Bandpass Filter Using Open-Loop Resonators”, IEEE Asia-Pacific Microwave Conference, Pacifico Yokohama, Melbourne, 5-8 Dec. 2011, pp.1054-1057.
  7. M. Naser-Moghadasi, B. Rahmati, M. Alamolhoda, Bal S. Virdee, “Hairpin Bandpass Filter with Broadband Spurious-Response Suppression”, Loughborough Antennas & Propagation Conference 2011, 14th & 15th November 2011, pp. 1-4. DOI: 10.1109/LAPC.2011.6114068
  8. B.S. Virdee, M. Farhat, “Dual-band Bandpass Filter Using Embedded Short-Circuited Resonators in the Open-loop C-shape Resonator”, The 41st European Microwave Conference (EuMC), 10-11 October 2011, Manchester, UK.
  9. 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, pp.?
  10. 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.
  11. 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.
  12. 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.
  13. 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
  14. Yazgi, M., Sayginer, M., Virdee, B.S., Toker, A., Kuntman, H., “Single-Stage Travelling Wave Amplifier for Power Applications”,  IEEE International Conference on +Yazgi, M.+Sayginer, M.+Virdee, B.S.+Toker, A.+Kuntman, H. 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.
  15. 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
  16. 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
  17. 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.
  18. 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
  19. 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
  20. 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
  21. 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
  22. 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.
  23. 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
  24. 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
  25. 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
  26. 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
  27. 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
  28. Virdee, B.S., Virdee, A.S., “Photonic Bandgap Folded Microstrip Ring”, Asia-Pacific Microwave Conference (APMC), New Delhi, India, December 2004, pp.840- .
  29. Virdee, B.S., Virdee, A.S., “X-Band High Efficiency Power Amplifier”, Asia-Pacific Microwave Conference (APMC),New Delhi, India, December 2004, pp.762- .
  30. Virdee, B.S., Grassopoulos, C., “Aperture Coupled Microstrip Resonator”, Asia-Pacific Microwave Conference (APMC), New Delhi, India, December 2004, pp.131- .
  31. Virdee, B.S., Banyamin, B., “Digital Pre-distortion Linearizer”, 34th European Microwave Conference, Oct. 2004, Amsterdam, Netherlands.
  32. Virdee, B.S., Grassopoulos, C., “Defected Ground Plane Microstrip Resonator”, 34th European Microwave Conference, Oct. 2004, Amsterdam, Netherlands.
  33. 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.
  34. 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  
  35. Virdee B.S., Grassopoulos, C.,Folded Microstrip Resonator”, 2003 IEEE Int. Microwave Symposium, Philadelphia, Pennsylvania, June 8-10, 2003.
  36. 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.
  37. 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.
  38. Virdee B.S., Grassopoulos, C., “Half-Ring Microstrip Resonator”, 2002 Asia-Pacific Microwave Conference (APMC), Kyoto, Japan, November 2002.
  39. Virdee B.S., Virdee, A.S., “30 KHz-40 GHz Amplifier for Optical Application”, Asia-Pacific Microwave Conference (APMC), Kyoto, Japan, November 2002.
  40. Virdee B.S., Grassopoulos, C., “Novel Half-Ring Microstrip ResonatorEuropean Microwave Conference 2002, Milan, Italy, September 2002. DOI: 10.1109/EUMA.2002.339388
  41. Virdee B.S., Virdee, A.S., Banyamin, B., “Bandwidth and Efficiency Improvements in Cascaded Single-Stage Distributed AmplifierEuropean Microwave Conference 2002, Milan, Italy, September 2002. DOI: 10.1109/EUMA.2002.339392
  42. Virdee B.S., Banyamin, B.,“Digital Predistortion Lineariser for Third Generation Cellular Base StationsEuropean Conference on Wireless Technology 2002, Milan, Italy, September 2002.
  43. Virdee, A.S., Virdee B.S., “Multioctave Cascaded Reactively Terminated Single-Stage Distributed Amplifier Design for High-Gain and Reduced Power Consumption for Optical ApplicationWireless Design Conference, Thursday 16th May 2002, London, UK, pp.177-180. Sponsored by IEEE & Microwave Engineering.
  44. Virdee, A.S., Virdee B.S., “Novel Current Sharing Concept Improves Efficiency of Broadband Feedback Amplifiers31st European Microwave Conference, Excel, Docklands, London, England, 24-28 September 2001. Sponsored by IEE & IEEE. DOI: 10.1109/EUMA.2001.338968 
  45. 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
  46. 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
  47. 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
  48. 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, ArizonaUSA, 20-25 May 2001. DOI: 10.1109/MWSYM.2001.966945
  49. Virdee, A.S., Virdee B.S., “Amplifier Design for High Efficiency PerformanceIEE Colloquium on Microwave and Power Amplifiers, Thurs. 7 Dec. 2000, IEE Savoy Place.
  50. 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
  51. 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
  52. 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.
  53. Virdee, B.S., “Design Method Produces Direct-Coupled DR Filters”,Microwave & RF, December 1997, pp.147-150.
  54. L.A. Trinogga, B.S. Virdee, “Dielectric Oscillator Invasive Tuning”, 6th International Crimean Conference on “Microwave & Telecommunications Technology”, Sevastopol, Ukraine,16-19th September 1996.
  55. 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.
  56. 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
  57. 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.
  58. Virdee, B., “Investigation of Different Microstrip Topologies for Tuning DR TE01d 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.
  59. 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.
  60. 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.
  61. 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.
  62. 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.
  63. 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.
  64. Virdee, B.S., Liu, W.Y., “On-chip Cooling of RFICs and MICs”, 34th European Microwave Conference, Oct. 2004, Amsterdam, Netherlands.
  65. 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.

Room: T7-03 Tower building
Telephone: +44 (0)20 7133 2172
Email: b.virdee@londonmet.ac.uk