Vector corrected noise temperature measurements

A new one-port technique for measuring noise temperature is presented that uses receiver noise parameters for error correction. Improved accuracy in one-port measurements of noise temperature made with commercial systems is demonstrated without using isolators. Equations for correcting mismatch erro...

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Bibliographic Details
Published in:2002 IEEE MTT-S International Microwave Symposium Digest (Cat. No.02CH37278) 2002, Vol.3, p.2253-2256 vol.3
Main Authors: Weatherspoon, M.H., Dunleavy, L.P., Boudiaf, A., Randa, J.
Format: Article
Language:English
Subjects:
Diodes
Error correction
Isolators
Microwave radiometry
NIST
Noise figure
Noise measurement
Performance evaluation
Temperature measurement
USA Councils
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Summary:A new one-port technique for measuring noise temperature is presented that uses receiver noise parameters for error correction. Improved accuracy in one-port measurements of noise temperature made with commercial systems is demonstrated without using isolators. Equations for correcting mismatch errors are developed as part of the available vector noise temperature equation. Results, presented for a C-band solid-state cold noise source and a pair of microwave solid-state noise diodes, are shown to be in good agreement with radiometric measurements of the same sources.
ISSN:0149-645X
2576-7216
DOI:10.1109/MWSYM.2002.1012322