CAVITY HIGH-Q TRIPLE-MODE DIELECTRIC RESONANT HOLLOW STRUCTURE AND FILTER COMPRISING SAME

摘要

Disclosed are a cavity high-Q triple-mode dielectric resonant hollow structure and a filter comprising same. The cavity high-Q triple-mode dielectric resonant hollow structure comprises a cavity and a cover plate. The cavity is provided with a quasi-cubic dielectric resonant block and a dielectric support frame. The quasi-cubic dielectric resonant block and the dielectric support frame form a triple-mode dielectric resonant rod. There is air between the triple-mode dielectric resonant rod and the inner wall of the cavity. One end or any end of the quasi-cubic dielectric resonant block is connected to the dielectric support frame respectively. The dielectric support frame is connected to the inner wall of the cavity. The quasi-cubic dielectric resonant block forms triple-mode resonance in X-axis, Y-axis, and Z-axis directions of the cavity. Compared with existing cavity filters, the cavity filter using the present invention has a volume reduced by 40% and an insertion loss reduced by 30% or above, and can ensure that a high Q value is obtained under a small spacing between the resonant rod and the cavity.