wccheng
Joined: 16 May 2004
Posts: 201
Helped: 1
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 28 Aug 2008 10:24 low-IF mix=NF(SSB),0-IF mix=NF(DSB),low-IF + 0-IF=?? |
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Dear all,
I have one question about the NF value simulation in mixer. In my design, it consists of two down-conversion mixers. First one is low-IF mixer and second one is zero-IF mixer. In the simulation, I simulate the low-IF mixer and get the NF(SSB) value. At the same time, I simulate the zero-IF mixer and get the NF(DSB) value. If I combined two mixers together and run the simulation, which NF value is correct, SSB or DSB?
Thanks
wccheng
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