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.