Wide-Band Frequency Discriminator with High Linearity

Abstract

A 7-to-11-GHz frequency discriminator with high linearity has been built using microwave integrated circuits (MICs). The critical subcomponent parameters of the discriminator were determined by computer analysis. The key elements of the design are balanced detectors with controlled terminations for internally generated harmonics and a gain equalizer to compensate for frequency-dependent losses. Linearity of the unit is better than /spl plusmn/0.85%.