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https://designers-guide.org/forum/YaBB.pl Measurements >> RF Measurements >> NF measurement using noise source https://designers-guide.org/forum/YaBB.pl?num=1221172918 Message started by karen on Sep 11th, 2008, 3:41pm |
Title: NF measurement using noise source Post by karen on Sep 11th, 2008, 3:41pm Hello, I am using HP346A noise source to measure the receiver chain noise figre. That is a ZIF system. I switch on/off the noise source, measure the output noise difference, do the calculation, I got the NF. Do I need to subtract 3 dB from the calculation? thanks. k : :-[ |
Title: Re: NF measurement using noise source Post by Mazz on Dec 26th, 2008, 12:54am In case of ZIF systems the NF is DSB (double sideband) so you don't need to subtract 3dB. Mazz |
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