Chuck, AF8Z
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I wonder if adding active bias feedback around the RF transistor to
reduce the low frequency current variations would help. This is the
classic PNP bias scheme which can be applied to BJT's or FET's. I have
used it to successfully improve the phase noise on oscillators. Details
from T.T. Ha, or Gonzales books on Amplifiers.
- [time-nuts] Low Phase Noise Amplifiers Charles Clark
- Re: [time-nuts] Low Phase Noise Amplifiers Gerhard Hoffmann
- Re: [time-nuts] Low Phase Noise Amplifiers Richard (Rick) Karlquist
- Re: [time-nuts] Low Phase Noise Amplifie... Dana Whitlow
- Re: [time-nuts] Low Phase Noise Ampl... lifespeed
- Re: [time-nuts] Low Phase Noise ... Dana Whitlow
- Re: [time-nuts] Low Phase Noise Amplifie... lifespeed
