公开(公告)号：US20180261901A1

公开(公告)日：2018-09-13

申请号：US15980646

申请日：2018-05-15

Applicant: Huawei Technologies Co., Ltd.

Inventor： Chuanan ZHANG ,  Yi CHEN

IPC: H01P1/208 ,  H01P3/12 ,  H01P5/08 ,  H01P3/08

CPC classification number: H01P1/2088 ,  H01P3/081 ,  H01P3/121 ,  H01P5/08 ,  H01P7/065

Abstract: A filter unit and a filter are disclosed. The filter unit includes two stacked cavities. Each cavity includes a dielectric substrate, and two surfaces of the dielectric substrate are each provided with a metal covering layer. Connected coupling slots and a row of metal slots parallel to the coupling slots are etched on a metal covering layer. One end of a coupling slot is an open end, and the other end is a closed end. The open end corresponds to a magnetic wall structure, and the closed end corresponds to an electric wall structure. The two cavities are coupled and connected by using the coupling slots.