公开(公告)号：US20240322787A1

公开(公告)日：2024-09-26

申请号：US18680617

申请日：2024-05-31

Applicant: Huawei Technologies Co., Ltd.

Inventor： Benfeng Zhang ,  Yulin Huang ,  Xinyi Li ,  Zongzhi Gao ,  Hangtian Hou

IPC: H03H9/13 ,  H03H9/02 ,  H03H9/17

CPC classification number: H03H9/132 ,  H03H9/02031 ,  H03H9/02102 ,  H03H9/02228 ,  H03H9/174 ,  H03H9/175 ,  H03H9/176

Abstract: A bulk acoustic wave resonator comprises a piezoelectric material layer, a first comb-shaped electrode, a second comb-shaped electrode, and at least one grid structure. The first comb-shaped electrode is disposed on the piezoelectric material layer, and the first comb-shaped electrode includes a first busbar and a plurality of first electrode fingers sequentially arranged along an extension direction of the first busbar. The second comb-shaped electrode is disposed on the piezoelectric material layer, and the second comb-shaped electrode includes a second busbar and a plurality of second electrode fingers sequentially arranged along an extension direction of the second busbar. The plurality of first electrode fingers and the plurality of second electrode fingers are arranged at spacings and do not contact each other. The grid structure is disposed at least between the first electrode finger and the second electrode finger.

公开(公告)号：US20240380385A1

公开(公告)日：2024-11-14

申请号：US18781266

申请日：2024-07-23

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yulin Huang ,  Benfeng Zhang ,  Xinyi Li ,  Rongrong Che ,  Zongzhi Gao

IPC: H03H9/64 ,  H03H9/145 ,  H03H9/25

Abstract: An acoustic filter includes a first resonator, a second resonator, and a first acoustic wave suppression structure. The first resonator and the second resonator are arranged in a first direction. The first acoustic wave suppression structure is disposed between the first resonator and the second resonator, and at least one stopband generated by the first acoustic wave suppression structure is used to reduce an acoustic wave that is leaked between the first resonator and the second resonator and that is propagated in the first direction.