Simple graphical method for calculating the efficiency of bulk negative-resistance microwave oscillators

Abstract

A graphical method is given for calculating the efficiency of a bulk negative-resistance microwave oscillator. It is shown that, for a square-wave r.f. signal, InP 3-level oscillators should have an efficiency of over 20% at fields only twice threshold, and In0.2Ga0.8Sb oscillators should give an efficiency of over 35%