Some Pitfalls in Millimeter-Wave Noise Measurements Utilizing a Cross-Correlation Receiver
- 1 May 1982
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Microwave Theory and Techniques
- Vol. 30 (5) , 715-718
- https://doi.org/10.1109/tmtt.1982.1131126
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
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