The configuration and performance of a Q-band injection-locked Gunn os
cillator are presented whose outport is connected with a phase-locked
reference source by a circulator. The output power of the oscillator i
s more than 60mW at 46.1GHz. The single-sideband phase noise (SSB) is
less than -71.7dBc/Hz offset 10kHz from the carrier, and the spectrum
of clutter signal is less than -40dB.