Phase Noise Vs Thermal Noise Floor
时间：04-04
整理：3721RD
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Hello everyone,
The white noise generated by passive devices in terms of phase noise is given as: -174+NF(dB)-Pout(dB). In case of frequency doubler or tripler, the phase noise is increased as: 20log(n) where n is multiplication factor.
Lets say I am using some nonlinear device(diode) for frequency multiplication(n=3) and lets assume for the moment that the nonlinear deice has no conversion loss(NF=1).
This will increase at least 9.5dB the oscillator phase noise.My question is at what level will be the thermal noise floor?
The white noise generated by passive devices in terms of phase noise is given as: -174+NF(dB)-Pout(dB). In case of frequency doubler or tripler, the phase noise is increased as: 20log(n) where n is multiplication factor.
Lets say I am using some nonlinear device(diode) for frequency multiplication(n=3) and lets assume for the moment that the nonlinear deice has no conversion loss(NF=1).
This will increase at least 9.5dB the oscillator phase noise.My question is at what level will be the thermal noise floor?