Title :
Design of tri-reflector Compact Antenna Test Range for millimetre/sub-millimetre wave and THz antenna measurement
Author :
Liu, Xiaoming ; Mai, Yuan ; Su, Hansheng ; Li, Daohui ; Chen, Xiaodong ; Donnan, Rob ; Parini, Clive ; Liu, Shaohua ; Yu, Junsheng
Author_Institution :
Sch. of Electron. Eng. & Comput. Sci., Queen Mary Univ. of London, London, UK
Abstract :
The Compact Antenna Test Range (CATR), which generates a pseudo-plane wave in a very short distance, is commonly employed to measure electrically large aperture antennas for the applications in space remote sensing and radio astronomy. With the increasing operating frequencies, the design of a CATR becomes a technical challenge. This paper presents the designs of two tri-reflector CATRs operating at 200 GHz: a Cassegrain-Gregorian (CG) configuration and a Double Gregorian (DG) one, through a dynamic ray-tracing approach. Both of the designs utilise two shaped sub-reflectors and a spherical main reflector. The characteristics of the two designs were also verified by using a commercial Physical Optics package, GRASP version 9.
Keywords :
antenna testing; aperture antennas; millimetre wave antennas; ray tracing; reflector antennas; submillimetre wave antennas; CATR; CG configuration; Cassegrain-Gregorian configuration; DG; THz antenna measurement; aperture antenna; commercial physical optics package; double Gregorian; dynamic ray-tracing approach; frequency 200 GHz; millimetre-submillimetre wave; pseudo-plane wave; radio astronomy; space remote sensing; spherical main reflector; trireflector compact antenna test range; two shaped sub-reflectors; Antenna measurements; Aperture antennas; Extraterrestrial measurements; Feeds; Surface waves;
Conference_Titel :
Antenna Technology (iWAT), 2011 International Workshop on
Conference_Location :
Hong Kong
Print_ISBN :
978-1-4244-9133-9
DOI :
10.1109/IWAT.2011.5752382
