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Reply To: Noise Figure Measurement for Downconverter

Forums › BB Series Discussions › Noise Figure Measurement for Downconverter › Reply To: Noise Figure Measurement for Downconverter

#248512
Justin CrooksJustin Crooks
Moderator

llevitt,
I’ve never tried this, but here are my initial thoughts. It seems to me that if you mapped your noise source’s ENR from RF to IF frequencies, then mapped the result back to RF frequencies, it might just work. It probably requires that image responses are sufficiently filtered, and that gain + ENR is in a reasonable range (15-35 dB?) to reduce the effect of the analyzer’s noise floor and compression.