Linear amplification is a requirement for processing many waveforms, although achieving high amplifier efficiency with linear performance might present a challenge. For example, terminating a JFET in an optimum resistance (Ropt) at one-half the maximum current, or Vdc/(Imax/2), does not result in linear amplification with 50% efficiency.1 For that reason, it is necessary to reconsider the way that FETs are analyzed. Linear models cannot be used
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