Publications - Antennas Research Ltd

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John Thornton - publications     1996 - 2017
 
2017 Papers.
J. Thornton and D. Smith, “Feed and Loss Effects in Spherical Lens Antennas for Satellite Communications”, International Journal of RF and Microwave Computer Aided Engineering, Vol 27, issue 1, January 2017  (First published online 01.09.16 as DOI: 10.1002/mmce.21036)

D. Gray, N. Nikolic, J. Thornton, “Performance of a medium gain radial effective media spherical lens antenna - a candidate for upper X-band satellite-on-the-move”, IEICE Conference, Hiroshima, Japan, 1 March 2017, identifier EP17468.

2016 Conference Papers.
J. Thornton, B. Dalay, D. Smith, “Additive Manufacturing of Waveguide for Ku-band Satellite Communications Antenna.” European Conference on Antennas and Propagation (EuCAP) 2016. Davos, Switzerland, 10-15 April 2016

D.P. Gray, N. Nikolic, J. Thornton, “Performance of a 2 Layer Radial Hole Effective Media Lens”, IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications (APWC). 19-13 September 2016, Cairns, Australia.

D.P. Gray, N. Nikolic, J. Thornton, “Frequency Performance of 4-Layer Discretized Luneburg Lenses”, IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications (APWC). 19-13 September 2016, Cairns, Australia.

2015 Conference Papers.
Derek Gray, Nasiha Nikolic, John Thornton, “Operation of 8-wavelength-radius 2-layer lenses”, 2015 IEEE International Symposium on Antennas and Propagation and North American Radio Science Meeting, 19-24 July 2015, Vancouver, BC, Canada. p. 326 - 327

Derek Gray, Nasiha Nikolic, John Thornton, “Frequency Performance of 8 Wavelength Radius Minimal Layer Number Lens Antennas”, IEEE APWC 2015, Torino (Italy), 7-11 September 2015, p. 1433 - 1436

J. Thornton, D. Smith, S. J. Foti, Y. Y. Jiang, “Reduced Height Luneburg Lens Antennas  for Satellite Communications-on-the-Move.”  2015 Conference on Microwave Techniques (COMITE), Pardubice, Czech Republic 22-23 April 2015.

Derek Gray, Nasiha Nikolic, John Thornton,“Survey of minimal layer number lens antennas for mm-wave alternatives to the Luneburg lens”,  IEICE Conference, Osaka, Japan, February 2015

2014 Conference Papers.
J. Thornton, “Waveguide Feed Chains for Scanning Lens Array in Ku and Ka Bands”, European Conference on Antennas and Propagation (EUCAP14), The Hague,  6-11April 2014.  pp. 3645-8.
D. Gray, J. Le Kernec, J. Thornton,  Assessment of Sochacki lenses for autonomous maritime patrol FLAR”,  IET Radar Conference, 13-17 October 2014, Lille, France

2013
D. Gray & J. Thornton, Scan Performance of Low Index Lens Reflector,” IET International Radar Conference 2013, Xi’an, April 2013, paper G0470.

Book:
J.   Thornton and K.C.Huang, “Modern Lens Antennas for Communications Engineering”, Wiley-IEEE,   published April 2013, ISBN: 978-1-118-01065-5

2012 Conference Papers.
J. Thornton, T. Butlin, B. Dalay, “Lens-Reflector Array Antenna for Satellite Communications on the Move”,  European Space Agency Workshop on Satcom User Terminal Antennas, 3-5 October 2012, ESTEC, Noordwijk, The Netherlands

P. Takats, P. Garland, J. Thornton, J. Cherkaoui, “A Yet Another Approach to Polar Satellite Communications”, 18th Ka and Broadband Communications, Navigation and Earth Observation Conference, 24-27 September 2012, Ottawa, Canada.

2010 Journal papers.
J. Thornton, S. Gregson, D. Gray, “Aperture Blockage and Truncation in Scanning Lens-Reflector Antennas”, IET  Microwaves, Antennas & Propagation, July 2010, Volume 4, Issue 7, pp. 828-836

2009 Journal papers.
J. Thornton, A.D.White, P.G.Long, “Multi-beam Scanning Lens Antenna for Satellite Communications to Trains”, Microwave Journal, Vol. 52 No. 8 August 2009.
http://www.mwjournal.com/Journal/article.asp?HH_ID=AR_7939

2009 Conference papers.
D. Gray, J. Thornton, R. Suzuki, “Assessment of Discretised Sochacki Lenses”, Loughborough Antennas and Propagation Conference (LAPC),  16-17 November 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, 1-5 June 2009.  paper 429.6.

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, 1-4 June 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 (EUCAP09), Berlin, pp 1377-1380, 23 March, 2009.

J. Thornton, “Tracking Multi-Beam Lens Antenna: the gain of a dish in half the height”. IET  "Broadband on Trains" Seminar, IET, Savoy Place, London, 23 April 2009. (invited paper).

2008   Journal papers.
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: Advanced Communication Techniques and Applications for High Altitude Platforms. Vol. 2008, No. 498517 , 2008.  

2008   Conference Papers
Derek Gray, John Thornton, Hiroyuki Tsuji. “Mechanically steered lens antennas for 45GHz high datarate airliner-ground link”. EHF-AEROCOMM/GLOBECOM 2008, New Orleans, USA, 30 Nov - 4 Dec, 2008.

J. Thornton. “Aperture blockage in mechanically scanned multi-beam lens antenna for satellite communications in Ku band..”  Meeting of COST-ic0603 'ASSIST', Limassol, 10 April, 2008.    http://www.cost-ic0603.unic.ac.cy/Slides/WG23.pdf

J.Thornton. “Versatility of scanning lens as ground antenna for HAP communications: low GHz to mm-wave”.   Meeting of COST-297, Nicosia, 9 April, 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, Japan, 11 September 2008.

J. Thornton, “Sidelobe Analysis of Scanning Lens Antenna for Satellite Communications.”Loughborough Antennas and Propagation Conference (LAPC)  17 - 18 March 2008. http://ieeexplore.ieee.org/stamp/stamp.jsp?arnumber=4516895&isnumber=4516839

2007   Journal papers.
John Thornton, “Scattering in Stratified Dielectric Lens Antenna with Covered Feed”, International Journal of RF and Microwave Computer Aided Engineering,   Vol. 17, No. 6, pp 513-520, November, 2007

J. Thornton, P. Haines, “Frequency selective lens antenna”. Electronics Letters, Vol. 43, No. 5, 1st March 2007, pp.258-259. http://ieeexplore.ieee.org/stamp/stamp.jsp?arnumber=04137458

Conference papers.

J. Thornton, T.C.Tozer, “Lens antennas for multi-satellite and multi-frequency band communications on trains.” IET Seminar:  "Broadband on Trains", London, 20 February 2007. (invited paper).

2006   Journal papers.
J. Thornton, “Wide-scanning Multi-layer Hemisphere Lens Antenna for Ka band.” IEE Proceedings Microwaves, Antennas & Propagation, Volume 153, Issue 6, December 2006. pp. 573-578.

Conference papers.
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.

2005   Journal Papers:
J. Thornton and  D. Grace. “Effect of Lateral Displacement of a High Altitude Platform on Cellular Interference and Handover”, IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS, Vol 4. No.4 July 2005. pp. 1483-90.

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. Vol. 35 No. 1-2, October 2005, pp.35-51
http://www.springerlink.com/content/y2u3028160r54942/fulltext.pdf

D. Grace, J. Thornton, G. Chen, G.P. White, T.C. Tozer, “Improving System Capacity of Broadband Services Using Multiple High  Altitude Platforms”, IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS , Vol 4, No 2,  March 2005, pp.700-9
 
Conference Papers:
J. Thornton, “Scanning Ka-band Vehicular Lens Antennas for Satellite and High Altitude Platform Communications”, 11th European Wireless Conference, Nicosia, 10-13 April 2005

G. White, Y. Zakharov, and J. Thornton, “Array Topologies for High-Altitude Platform Smart Antennas”, 8th International Symposium on Wireless Personal Multimedia Communications (WPMC 2005), Aalborg, Denmark, 17-22 September 2005.

2004   Journal Papers:
J. Thornton and  D. Grace, “Effect of Antenna Aperture Field on Co-Channel Interference, Capacity and Payload Mass in High Altitude Platform Communications”,  ETRI Journal.Vol. 26, Number 5, October 2004, pp.467 - 474 also "Paper of the Year" Award 2004, ETRI Journal.

J. Thornton, A Low Sidelobe Asymmetric Beam Antenna for High Altitude Platform Communications”, IEEE Microwave and Wireless Components Letters. Vol. 14, No. 2, February 2004, pp.59-61

Conference Papers:
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).  September 21-22.  ESTEC, European Space Agency

J. Thornton, T. 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 Wireeless Personal Multimedia Communications (WPMC) 2004, Abano Terme, Italy, 12-15 September 2004

C. Spillard, D. Grace, J. Thornton, G.P. White, B. Gremont, T. C. Tozer, “High Altitude Platforms at York: HeliNet and Beyond”,  International Conference on Next Generation Teletraffic and Wired/Wireless Advanced Networking (NEW2AN'04), St. Petersburg, Russia, 2-6 February 2004.

2003 Journal Papers:
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, Vol. 2, No. 3, May 2003 pp.484 - 492

Conference Papers:
D. Grace, G. Chen, G. P. White,  J. Thornton, T. C. Tozer,  "Improving the System Capacity of mm-Wave Broadband Services Using Multiple High Altitude Platforms",  IEEE Global Communications Conference (GLOBECOM), San Francisco, USA.  December 2003.

D. Grace, J. Thornton, G.P. White, C. Spillard, D.A.J. Pearce,M. Mohorcic, T. Javornik,E. Falletti,  J.A. Delgado-Penin, E. Bertran, "The European HeliNet Broadband Communications Application – An Update on Progress"  Stratospheric Platforms Systems Workshop (SPSW) February 2003, Japan. Invited Paper.

2002 Journal papers:
J. Thornton, "Dimensioning a Retro-directive Array for Communications via a Stratospheric Platform", ETRI Journal  Vol 24. No.2  pp. 153 - 160  April 2002.

C.L. Spillard, D. Grace, J. Thornton, T.C. Tozer, "Effect of ground station antenna beamwidth on rain scatter interference in high-altitude platform links", Electronics Letters. Vol. 38 No. 20 pp. 1211-1213 September 2002.
 
Conference Papers:
D. Grace, C. Spillard, J. Thornton, T.C. Tozer,  "Channel Assignment Strategies for a High Altitude Platform Spot-beam Architecture",IEEE PIMRC, Lisbon, September 2002.

J. Thornton, G. White, C. Spillard, T.C. Tozer, D. Grace, "Broadband  Communications from The European HeliNet High Altitude Platform - Two Years On", 4th  International Airship Convention and Exhibition, Cambridge, UK, 28-31 July  2002

C. Spillard, D. Grace, J. Thornton, G.P. White, M. Mohorcic, E. Falletti and T.C. Tozer, "Broadband Communications from HeliNet High Altitude Platforms," Data Systems in Aerospace Conference (DASIA), Dublin, Ireland, 13-16 May 2002

J. Thornton, "Antenna Technologies for Communications Services from Stratospheric Platforms." 4th  International Airship Convention and Exhibition, Cambridge, UK, 28-31 July  2002

D. Grace, J. Thornton, G. P. White, T.C. Tozer, "Improving Spectrum Utilisation for Broadband Services in MM-wave Bands Using Multiple High Altitude Platforms."  IEE Conference – Getting the Most out of the Radio Spectrum, London, October 24/25 2002

2001 Journal papers:
J. Thornton, D. Grace, C. Spillard, T. Konefal, T. C. Tozer, "Broadband Communications from a High Altitude Platform - The European HeliNet Programme",
IEE Electronics and Communications Engineering Journal, June 2001.pp.138-144

Conference Papers:
C. Spillard, J. Thornton, D.Grace, T.C.Tozer, "Calculation of interference levels due to rain scatter on high-altitude platform links", .ICAP01, Manchester, April 2001
 
C. Spillard, J. Thornton, G. Grace,  T.C. Tozer, "Calculation of Interference Levels Due to Rain Scatter on a High-Altitude Platform Link", IEEE APS/URSI  Symposium Boston,  9-13 July 2001.

D.Grace, J. Thornton, T. Konefal, C. Spillard, T. C. Tozer, "Broadband Communications from High Altitude Platforms – The HeliNet Solution" invited paper, WPMC01, Aalborg, Denmark, September 2001.

2000 Journal papers:
J. Thornton and D. J. Edwards, "Range measurement using modulated retro-reflectors in FM radar system." IEEE Microwave and Guided Wave Letters. vol.10, no.9; Sept. 2000; p.380-2.

Conference Papers:
A.M. Street, A.P. Jenkins, J. Thornton, D.J. Edwards, "Low Cost Adaptive Antenna Systems for Indoor Mobile Wireless Communications", AP2000 Conference, Davos, Switzerland, 9-14 April 2000

1998 Journal papers:
J.Thornton, C.M.Mann, P. de Maagt, "Optimisation of a 250 GHz Schottky Tripler Using Novel Fabrication and Design Techniques" IEEE Transactions on Microwave Theory and Techniques. Vol 46 No. 8 August 1998 pp. 1055-1061

J.Thornton,  D.J.Edwards, "Modulating Retroreflector as a Passive Radar Transponder", Electronics Letters Vol 34 No. 19 September 1998 p1880

J. Stake, L. Dillner, S. H. Jones, C. Mann,  J. Thornton, J. R. Jones, W. L. Bishop, E. Kollberg, "Effects of Self-Heating on Planar Heterostructure Varactor Diodes", IEEE Transactions on Electron Devices Vol.45, No.11 November 1998, pp. 2298-2303
 
X. Melique, C. Mann, P. Mounaix, J. Thornton, O. Vanbesien, F. Mollot, D. Lippens, "5mW and 5% efficiency 216 GHz InP-based Heterostructure Barrier Varactor Tripler", IEEE Microwave and Guided Wave Letters. Vol.8, No. 11, November 1998, pp. 384-386

Conference Papers:
S. Mahieu, C. M. Mann, J. Stake, L. Dillner, S. H. Jones, E. Tong, J. Thornton, "A Broadband Frequency Tripler for SIS Receivers" Proc. 9th Int. Symp. on Space Terahertz Technology, Pasadena, CA, March 1998

B. J. Maddison, R. Martin, M. L. Oldfield, C. M. Mann, D. N. Matheson, B. N. Ellison, J. Thornton, W. Hall and D. Lamarre,  “A Compact 500 GHz Schottky Diode Receiver with a Wide Instantaneous Bandwidth”, Proc. 9th Int. Symp. on Space Terahertz Technology, Pasadena, CA, March 1998

1997  Conference Papers:
S. Jones, R. Lipsey, C. Mann, J. Thornton, "The Complete Analysis of a 91.33 - 274 GHz Schottky Barrier Varactor Frequency Tripler."Proceedings of the 8th Space Terahertz Conference, Boston 1997
 
J. Thornton, C. M. Mann and P.de Maagt, "A High Power 270 GHz  Frequency Tripler Featuring a Schottky Diode Parallel Pair." Proc. IEEE Microwave Conference. Denver 1997
 
M. L. Oldfield, C. M. Mann, B. J. Maddison, J. Thornton, D.N. Matheson, B. N. Ellison & A. Jones, "A Solid State 560 GHz Diode Receiver with a Wide Instantaneous Bandwidth",  Proc. 5th International Workshop on Terahertz Electronics, Grenoble, France, 1997.

1996 Conference Papers:
J. Thornton, C. M. Mann, "A Design Approach for Planar Waveguide Launching Structures", 7th International Symposium on Space Teraherz Technology, University of Virginia, March 1996.
 
***************************************************************
Patents:
 
1) The following patents describe inventions relating to modulated microwave retro-reflectors, means of their construction, and applications relating to vehicle tracking and collision avoidance transponders using FM radar:
UK Application Nos. 9907117.7 and 9912840.7. "Transponder"
International Application no:  PCT/GB00/01136. "Transponder"
“Transponders”
WO/2000/059068         Published as:    WO0059068
US6657580
Co-inventors are J. Thornton (University of York) and D.J.Edwards (Department of Engineering Science, University of Oxford).
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