HIGH GAIN, ULTRA LINEAR DETECTOR FOR FREQUENCY MODULATION

摘要

A detector for providing quadrature detection of frequency modulated signals is disclosed. An FET (Field Effect Transistor) device having two gates, a source and a drain, has one gate coupled to the frequency modulated incoming signal and the other gate coupled through a 90 DEG phase shifter to the incoming signal. The demodulated signal appears at the drain electrode of the FET.