Gain and Distortion Properties of FET Mixers and Modulators

An analytical procedure is developed capable of predicting the performance of FET's in mixer and modulator applications. The work is sufficiently general to permit analysis of all modes of operation from hard-switching to "Class A" and to facilitate calculation of nonlinear distortion product levels. Theoretical predictions of conversion gain and intermodulation distortion performance agree well with the measured behaviour of a typical HF circuit.