Optimally designed dielectric resonator oscillator (DRO) and method therefor

摘要

A design methodology for a DRO that facilitates the development of the DRO. The methodology involves providing an electrical length of approximately 180 degrees or a multiple thereof from a region interior to a field effect transistor to a puck-resonator line interaction region, providing an electrical length of approximately 180 degrees or a multiple thereof from a region interior to the field effect transistor to the signal end of a source feedback transmission line, and providing an electrical length of approximately 90 degrees or an odd multiple thereof from a varactor diode signal ground to a puck-tuning line interaction region. Other aspects relate to a DRO resonator transmission line and a DRO tuning transmission line having a portion formed on a higher dielectric substrate to concentrate the electromagnetic field, and a portion on a lower dielectric substrate to expand the electromagnetic field near the dielectric resonator puck.