NEAR RESONANT CAVITY TUNING DEVICES

摘要

The present invention pertains to an electronically tunable resonating apparatus (50) which uses a tunable dielectric material (90a, 90b) which is biased by an electric field to alter the resonant frequency in a resonating cavity (54). Electrodes (78, 94) apply the electric field and are connected to a variable voltage source (V), thereby providing a plurality of electric field strengths and thus provides a range of resonant frequencies in resonating apparatus (50). The resonating apparatus (50) is particularly useful for microwave and millimiter wave electromagnetic energy (74).