Processes of AM-PM Distortion in Large-Signal Single-FET Amplifiers

  title={Processes of AM-PM Distortion in Large-Signal Single-FET Amplifiers},
  author={Soheil Golara and Shervin Moloudi and Asad A. Abidi},
  journal={IEEE Transactions on Circuits and Systems I: Regular Papers},
Using an appropriate formulation of field-effect transistor (FET) current as a nonlinear function of terminal voltages, and a simplified model of gain compression in common source amplifiers, we are able to identify four principal sources of amplitude-to-phase (AM-PM) distortion. A new analysis shows the varactor effect of gate-source capacitance on AM-PM distortion, and the changing Miller-multiplied gate-drain capacitance as the field-effect transistor (FET) is driven into compression. The… CONTINUE READING
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