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https://designers-guide.org/forum/YaBB.pl Measurements >> RF Measurements >> C/N of Low-IF Receiver with small Gain https://designers-guide.org/forum/YaBB.pl?num=1125934832 Message started by pancho_hideboo on Sep 5th, 2005, 8:40am |
Title: C/N of Low-IF Receiver with small Gain Post by pancho_hideboo on Sep 5th, 2005, 8:40am Hi. How do you measure C/N or NF of Low-IF Reciever which doesn't have much Gain ? :-* Generally Noise Source for NF Meter is valid from 10MHz. I can't evaluate C/N reliably using Spectrum Analyzer since Receiver doesn't have much Gain. Is there any practical or reliable instrument in commercial ? Noise/Com Inc. has good solution ? http://www.noisecom.com/ |
Title: Re: C/N of Low-IF Receiver with small Gain Post by cybq on Jun 8th, 2006, 11:24pm try to use enough low noise floor spectrum analyzer, with addition of RF probe (it is a hign input impedance device). |
Title: Re: C/N of Low-IF Receiver with small Gain Post by keplin on Aug 5th, 2006, 11:38am How about using a really low resolution bandwidth on the Spectrum Analayzer and using a Noise Source with an ENR of say 15dB? This should work well. |
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