Microwave Oscillator by Integration of A Planar Circuit and Gunn Diodes

Abstract

The oscillator with multiple active devices using higher order mode of planar circuits for power combinig in microwave / millimeter wave bands were investigated. For the fundamental study, the configuration of the oscillator with TM_<41> and TM_<61> modes of circular resonator and Gunn Diodes have been studied. The experiments of the oscillators with three and five devices were made at X-band. The combined power of five devices case has attained to be about five times that of one devices. As a result, the power combining method proposed here is successfully confirmed both experimentally and theoretically.