Mechanically Steered Lens Antennas for 45GHz High Datarate Airliner-Ground Link

Author

Gray, Derek ; Thornton, John ; Tsuji, Hiroyuki

Author_Institution

Nat. Inst. of Inf. & Commun. Technol., Koganei

fYear

2008

fDate

Nov. 30 2008-Dec. 4 2008

Firstpage

1

Lastpage

6

Abstract

A mechanically steered hemispherical lens antenna was investigated using the commercially available MOM software FEKO^TM to meet a requirement for a low weight and low cost mm-wave transmit antenna for installation onboard a large passenger aircraft. Hemispherical homogeneous lenses of relative permittivity 2.5 and 4 wavelength radius were found to meet the 26.5 dBic gain specification across 75deg elevation scan range. Distorting the circular reflecting plate under the hemispherical lens to an elliptical shape was found to increase the elevation scan range to 105deg, satisfying the scan requirement. Similar results were obtained with a relative permittivity 1.7 lens, when fed by a near field focused horn antenna. The advantage of the latter design is 40% reduction in mass of the lens.

Keywords

aircraft antennas; horn antennas; lens antennas; millimetre wave antennas; airliner-ground link; frequency 45 GHz; hemispherical homogeneous lenses; hemispherical lens antenna; large passenger aircraft; mechanically steered lens antennas; relative permittivity; transmit antenna; Aircraft; Antenna feeds; Aperture antennas; Bandwidth; Costs; Lenses; Optical design; Permittivity; Satellite broadcasting; Transmitting antennas;

fLanguage

English

Publisher

ieee

Conference_Titel

GLOBECOM Workshops, 2008 IEEE

Conference_Location

New Orleans, LO

Print_ISBN

978-1-4244-3061-1

Electronic_ISBN

978-1-4244-3062-8

Type

conf

DOI

10.1109/GLOCOMW.2008.ECP.9

Filename

4746594