公开(公告)号：EP4027450A1

公开(公告)日：2022-07-13

申请号：EP19948057.5

申请日：2019-09-30

申请人： Huawei Technologies Co., Ltd.

发明人： QIAO, Dongchun ,  XU, Fanghai ,  SHI, Jing ,  DU, Xiaoliang

IPC分类号： H01P1/20

摘要： Embodiments of this application provide a dielectric filter and a communication device. The dielectric filter includes: a dielectric body, a first blind via and a second blind via that are provided in the dielectric body, a through hole located between the first blind via and the second blind via, and an insulating portion, where inner walls of the first blind via, the second blind via, and the through hole each are covered with a metal layer, and an outer surface of the dielectric body is covered with a metal layer; and the insulating portion is implemented by not covering a metal layer on a surface of the dielectric body, and the insulating portion partially surrounds the through hole. By using the dielectric filter in the embodiments of this application, when a signal wave entering the first blind via passes through the through hole, a phase of the signal wave negatively shifts for 90 degrees, and the signal wave is transmitted to the second blind via, so that an electric coupling of the dielectric filter is implemented. In such a manner of implementing the electric coupling, because a through hole is provided between the first blind via and the second blind via, modeling processing complexity is reduced. Moreover, such an electric coupling manner does not have a parasitic resonance effect and does not affect low band suppression.