Abstract :
Microstrip IMPATT oscillators have been built at X-band and V-band in order to obtain hybrid integrated power sources for locked amplifier applications. It is shown that using a microstrip circuit shorter than a half-wavelength gives the highest locking figure of merit and therefore the largest possible locking range for a given gain. A figure of merit of 0.10 has been obtained for a locking gain of 20 dB.
