Title :
Some Pitfalls in Millimeter-Wave Noise Measurements Utilizing a Cross-Correlation Receiver
Author :
Sutherland, A.D. ; van der Ziel, A.
fDate :
5/1/1982 12:00:00 AM
Abstract :
It is shown that the use of a hybrid junction as the power splitter in a cross-correlation receiver for millimeter-wave (94-GHz) noise measurements at low temperature (2 K) introduces an unwanted source of noise which defeats the purpose of the measurements. The same is the case when isolators are introduced to prevent cross-coupling of the noise from the two receiver channels.
Keywords :
Circulators; Flow graphs; Hybrid junctions; Instruments; Isolators; Millimeter wave measurements; Millimeter wave technology; Noise measurement; Power measurement; Temperature measurement;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
DOI :
10.1109/TMTT.1982.1131126
