Dr. John Thornton
 

Dr. John Thornton BSc. MSc. PhD. MIEEE

Research Fellow

Email: jt21@ohm.york.ac.uk
Homepage: http://www-users.york.ac.uk/~jt21/
Tel: +44 (0)1904 43 3248
Fax: +44 (0)1904 43 3224

Originally a physics graduate of the University of York (1989), I returned to science after a protracted spell in industry, and commenced an MSc. in Microwave Solid State Physics at the University of Portsmouth in 1994. The MSc lead to a project with the Millimetre Wave Technology Group at the Rutherford Appleton Laboratory in Oxfordshire, where I hung about for nearly two years. At RAL I also worked as a consultant for the European Space Agency, developing frequency multipliers as millimetre wave sources in the region 270 GHz.

The next job (97 - 2000) was with the communications research group at the University of Oxford's Department of Engineering Science, initially to work on the radar project  and later a variety of other activities, including teaching the undergraduates and supervising some 4th year projecs. However, poverty and impending homelessness eventually led to a return "up north" and I moved to my present post in 2000.

I  completed a doctoral thesis on passive microwave transponders for the Open University with their, having registered in 1999 while still at Oxford. I was pleased to pass the viva examination on 1st August 2002.

Latest 30 Publications

  • D. Gray, J. Thornton, R. Suzuki, Assessment of Discretised Sochacki Lenses, Loughborough Antennas and Propagation Conference (LAPC), 297-300, Loughborough , UK, November, 2009
  • J. Thornton, A.D.White, P.G.Long, Multi-beam Scanning Lens Antenna for Satellite Communications to Trains, Microwave Journal, 52(8):56-, August, 2009
  • D. Gray, J. Thornton, H. Tsuji and Y. Fujino., Scalar feeds for 8 wavelength diameter homogeneous lenses., IEEE International Symposium on Antennas and Propagation (AP-S 2009), Charleston, USA, June, 2009
  • J. Thornton, A.D.White, T.C.Tozer, Development of Dual Beam Tracking Lens Antenna for Satellite Communications to Trains., 27th International Communications Satellite Systems Conference (ICSSC 2009)., Edinburgh, June, 2009
  • J. Thornton, Tracking Multi-Beam Lens Antenna: the gain of a dish in half the height, IET "Broadband on Trains" Seminar, IET London, April, 2009
  • J. Thornton, A.D.White, D. Gray, Multi-beam lens-reflector for satellite communications: construction issues and ground plane effects., European Conference on Antennas and Propagation, 1377-1380, Berlin, March, 2009
  • Derek Gray, John Thornton, Hiroyuki Tsuji., Mechanically steered lens antennas for 45GHz high datarate airliner-ground link., EHF-AEROCOMM/GLOBECOM 2008, New Orleans, USA, Nov, 2008
  • Derek Gray, John Thornton, Hiroyuki Tsuji., Mechanically Steered mm-Wave Aeronautical Lens Reflector Antennas - development of 45GHz homogeneous lens reflector antenna for civilian airliners, Meeting of IEICE Technical Committee on Antennas and Propagation, National Defense Academy, Japa, September, 2008
  • John Thornton, Aperture blockage in mechanically scanned multi-beam lens antenna for satellite communications in Ku band., meeting of COST-ic0603 'ASSIST', Limassol, April, 2008
  • John Thornton, Versatility of scanning lens as ground antenna for HAP communications: low GHz to mm-wave., Nicosia, April, 2008
  • J. Thornton, Sidelobe Analysis of Scanning Lens Antenna for Satellite Communications, Loughborough Antennas and Propagation Conference (LAPC), Loughborough, March, 2008
  • J. Thornton, T.C.Tozer, A.D.White, A WiMAX Payload for High Altitude Platform Experimental Trials., EURASIP Journal on Wireless Communications and Networking: Special Issue on etc., 2008(498517)2008
  • John Thornton, Scattering in Stratified Dielectric Lens Antenna with Covered Feed, International Journal of RF and Microwave Computer Aided Engineering, 17(6):513-520, November, 2007
  • J. Thornton, P. Haines, Frequency selective lens antenna., Electronics Letters, 43(5):258-259, March, 2007
  • John Thornton, Tim Tozer, Lens antennas for multi-satellite and multi-frequency band communications on trains., IET Seminar: "Broadband on Trains", London, February, 2007
  • John Thornton, Wide-scanning Multi-layer Hemisphere Lens Antenna for Ka band., IEE Proceedings Microwaves, Antennas and Propagation, 153:573-578, December, 2006
  • J. Thornton, A Scanning Hemispherical Lens Antenna for 10-30 GHz Where The Feed is Modelled as a Linear End-Fire Array., Loughborough Antennas and Propagation Conference (LAPC) 2006:, Loughborough, UK, April, 2006
  • J. Thornton, D.A.J. Pearce, D. Grace, M. Oodo, K. Katzis, T.C. Tozer, Effect of Antenna Beam Pattern and Layout on Cellular Performance in High Altitude Platform Communications., International Journal of Wireless Personal Communications (Special Issue), 35(-1):35-51, 0929-6212 (paper), October, 2005
  • G. White, Y. Zakharov, J. Thornton, Array Topologies for High-Altitude Platform Smart Antennas, 8th International Symposium on Wireless Personal Multimedia Communications (WPMC 2005), Aalborg, Denmark, Sept., 2005
  • J. Thornton and D. Grace, Effect of Lateral Displacement of a High Altitude Platform on Cellular Interference and Handover, IEEE Transactions on Wireless Communications, 4(4):1483-90, July, 2005
  • John Thornton, Scanning Ka-band Vehicular Lens Antennas for Satellite and High Altitude Platform Communications., 11th European Wireless Conference, Nicosia, Cyprus, April, 2005
  • D. Grace, J. Thornton, G. Chen, G.P. White, T.C. Tozer,, Improving the System capacity of Broadband Services Using Multiple High Altitude Platforms, IEEE Transactions on Wireless Communications, 4(2):700-9, March, 2005
  • J. Thornton and D. Grace, Effect of Antenna Aperture Field on Co-Channel Interference, Capacity and Payload Mass in High Altitude Platform Communications. also "Paper of the Year 2004, ETRI Journal", ETRI Journal, 26(5):467 - 474, 1225-6463, October, 2004
  • John Thornton,, Properties of Spherical Lens Antennas for High Altitude Platform Communications., 6th European Workshop on Mobile/Personal Satcoms & 2nd Advanced Satellite Mobile Systems (EMPS & ASMS), ESA/ESTEC, September, 2004
  • J. Thornton and T. C. Tozer, Adaptation of ITU Recommended Antenna Pattern for Prediction of Multi-Cell Co-Channel Interference in High Altitude Platform Communications in the 47/48 GHz Band., The Seventh International Symposium on WIRELESS PERSONAL MULTIMEDIA COMMUNICATIONS (WPMC), Abano Terme, Italy, September, 2004
  • J. Thornton, A Low Sidelobe Asymmetric Beam Antenna for High Altitude Platform Communications, IEEE Microwave and Wireless Components Letters, 14(2):59-61, February, 2004
  • C. L. Spillard, D. Grace, J. Thornton, G. P. White and T.C. Tozer, High Altitude Platforms at York: HeliNet and Beyond, NEW2AN Conference, St Petersburg, February, 2004
  • D. Grace, G. Chen, G.P. White, J. Thornton, T.C. Tozer,, Improving the System Capacity of mm-Waveband Broadband Services Using Multiple High Altitude Platforms, IEEE GLOBECOM 2003, San Francisco, December, 2003
  • J. Thornton, D. Grace, M. H. Capstick, T. C. Tozer., Optimising an Array of Antennas for Cellular Coverage from a High Altitude Platform, IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS, 2(3):484-492, May, 2003
  • J. Thornton, D. Grace, M. H. Capstick, T. C. Tozer., Optimising an Array of Antennas for Cellular Coverage from a High Altitude Platform, IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS, 2(3):484-492, May, 2003
  • D. Grace, J. Thornton, G.P. White, C.L. Spillard, D.A.J.Pearce et al, The European HeliNet Broadband Communications Application - An Update on Progress, Japanese Stratospheric Platforms Systems Workshop, Japan, February, 2003

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