These Spacek Labs Gunn oscillators use high Q resonator circuits to produce clean and stable output signals. Either GaAs or InP Gunn diodes are used depending on the output power and frequency requirements. InP Gunn diodes are generally used in the high frequency high power oscillators. They offer lower AM noise along with higher efficiency. The bias input contains an integral low frequency suppression filter and over voltage protection circuit. These oscillators can be used as a laboratory source, a multiplier driver, local oscillator or whenever a reliable source for the generation of millimeter-wave signals is required.