What happens in IF mixer, when LO contains 2 harmonics (one with bigger amplitude)?
时间:04-06
整理:3721RD
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For example, LO contains two frequencies: 5GHz and 10GHz
What happens with IF if 5GHz amplitude is bigger, but incoming RF signal is 10GHz?
LO: 5GHz A1 + 10GHz A2 A1>A2
RF: 10GHz (modulated) A3
Would we get IF=RF-LO=10-10+modulation.
What happens with IF if 5GHz amplitude is bigger, but incoming RF signal is 10GHz?
LO: 5GHz A1 + 10GHz A2 A1>A2
RF: 10GHz (modulated) A3
Would we get IF=RF-LO=10-10+modulation.
you get output frequences that are (N x Frf) +/- (M Flo), where N and M are 0 to around 10. there are a tone of spurious tone predictor programs out there.
In some odd cases, where the LO has 2 tones that are correlated to each other, you can get some interesting beat note effects in amplitude also.
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