DocumentCode :
986795
Title :
A new correlation radiometer
Author :
Aitken, George J.M.
Author_Institution :
Queen´´s University, Kingston, Ontario, Canada
Volume :
16
Issue :
2
fYear :
1968
fDate :
3/1/1968 12:00:00 AM
Firstpage :
224
Lastpage :
228
Abstract :
A correlation radiometer is described in which the input signal is divided among 
amplifiers. The outputs of the amplifiers are cross-correlated in all possible combinations and the cross-products added to give the system output. It is shown that as goes to infinity the sensitivity of the radiometer approaches that of an ideal total-power system. A practical system of six amplifiers offers an improvement of 2.2 dB over a conventional two-amplifier correlation radiometer, or an improvement of 5.2 dB over a Dicke system.
amplifiers. The outputs of the amplifiers are cross-correlated in all possible combinations and the cross-products added to give the system output. It is shown that as goes to infinity the sensitivity of the radiometer approaches that of an ideal total-power system. A practical system of six amplifiers offers an improvement of 2.2 dB over a conventional two-amplifier correlation radiometer, or an improvement of 5.2 dB over a Dicke system.Keywords :
Radiometry; Application specific processors; Circuit noise; Circuit stability; Costs; Detectors; Helium; Microwave radiometry; Noise level; Power measurement; Voltage fluctuations;
fLanguage :
English
Journal_Title :
Antennas and Propagation, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-926X
Type :
jour
DOI :
10.1109/TAP.1968.1139144
Filename :
1139144
Link To Document :
