Title :
Proposed method for measurement of absorption loss and beam efficiency of large MM-wave reflector antennas in compact antenna test range by using hot and cold loads
Author :
Lehto, A. ; Tuovinen, J. ; Räisänen, A.
Author_Institution :
Radio Lab., Helsinki Univ. of Technol., Espoo, Finland
fDate :
2/1/1991 12:00:00 AM
Abstract :
A novel method to measure absorption loss and beam efficiency of large reflector antennas at millimetre wave frequencies is presented. It is based on a compact antenna test range (CATR) which has hot and cold loads placed at the focal plane. The size of loads is feasible. If the measurements are carried out with a CATR, the loads are difficult or impossible to realise. An analysis of the measurement of a 2 m antenna, using a low-noise receiver, shows that the accuracy is better than +or-0.1 dB for the loss and +or-1% for the beam efficiency.
Keywords :
loss measurement; microwave antennas; microwave measurement; reflector antennas; 2 m; CATR; EHF; MM-wave; absorption loss measurement; beam efficiency measurement; cold loads; compact antenna test range; hot loads; large millimetre wave reflector antennas;
Journal_Title :
Microwaves, Antennas and Propagation, IEE Proceedings H
