high performance stop band filter and its communication cavity device

摘要

It is a high performance band stop filter that includes a cavity and a cavity mounted cover plate. an elongate cavity is formed in the cavity, and a connecting port is formed at each end of the cavity. a transmission line and a transmission line chamber for accommodating the transmission line are provided in the cavity. one side of the transmission line chamber is provided with a plurality of resonant cavities, and each resonant cavity is provided with a resonant pole. each resonant post is provided with a receiving hole, and an impedance conversion structure is arranged in the transmission line. A set screw is suspended on the cover plate. The adjusting screw is contactlessly connected to a corresponding resonant post. specifically, the transmission line is provided with a plurality of impedance conversion structures and the plurality of impedance conversion structures is arranged respectively.