Receiving techniques used in the Queen Mary and Westfield Collegemillimetre wave compact range

摘要

The author describes the various receiver configurations that areused in the QMW millimetre wave compact antenna test range to measureantennas in the frequency range 90-200 GHz. The millimetre wave compactantenna test range (mmCATR) at QMW is a single offset reflectorconstructed from 18 reflector panels of a design identical to those usedin the James Clerk Maxwell radio telescope. The panels, with an RMSsurface accuracy of between 10 μm and 16 μm, form a single offsetCATR with focal length of 5.4 m and a reflector aperture that cancontain a 3 m diameter circle. The range is enclosed by an anechoicchamber with a separate anti-chamber containing the transmit feed