[time-nuts] Low Phase Noise Amplifiers

[Charles Clark]

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.

Chuck, AF8Z