Presentation	2008/9/4 Mechanically Steered mm-Wave Aeronautical Lens Reflector Antennas : development of 45GHz homogeneous lens reflector antenna for civilian airliners Derek GRAY, John THORNTON, Hiroyuki TSUJI,
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Abstract(in English)	To meet a requirement for a low weight and low cost antenna for installation onboard a large passenger aircraft, a mechanically steered hemispherical lens antenna was investigated using the commercially available MOM software FEKO^. In order to simplify construction, a homogeneous lens reflector was chosen. The lens was found to focus to a cigar shaped region which degraded with scan angle. Extending the reflecting plate beyond the edges of the hemispherical lens, using a small horn feed with a dielectric insert and distorting the shape of the lens were all found to improve the gain of the lens over a wider scan angle range. A reflector lens design giving 23dBic and 80% aperture efficiency across the required ±45° scan range is demonstrated. Progress to date on a 26.5dBic design is also made, as is comparison to equivalent conventional designs using higher weight materials.
Keyword(in Japanese)	(See Japanese page)
Keyword(in English)	lens antenna
Paper #	A・P2008-92
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Conference Information
Committee	AP
Conference Date	2008/9/4(1days)
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Paper Information
Registration To	Antennas and Propagation (A・P)
Language	ENG
Title (in Japanese)	(See Japanese page)
Sub Title (in Japanese)	(See Japanese page)
Title (in English)	Mechanically Steered mm-Wave Aeronautical Lens Reflector Antennas : development of 45GHz homogeneous lens reflector antenna for civilian airliners
Sub Title (in English)
Keyword(1)	lens antenna
1st Author's Name	Derek GRAY
1st Author's Affiliation	Space Communications Group, NICT()
2nd Author's Name	John THORNTON
2nd Author's Affiliation	The Department of Electronics, The University of York
3rd Author's Name	Hiroyuki TSUJI
3rd Author's Affiliation	Space Communications Group, NICT
Date	2008/9/4
Paper #	A・P2008-92
Volume (vol)	vol.108
Number (no)	201
Page	pp.pp.-
#Pages	6
Date of Issue