公开(公告)号：US20210044273A1

公开(公告)日：2021-02-11

申请号：US16980328

申请日：2019-03-14

Applicant: FREC'N'SYS

Inventor： Sylvain Ballandras ,  Florent Bernard ,  Emilie Courjou

IPC: H03H9/145 ,  H03H9/02 ,  H03H9/64

Abstract: A transducer structure for a surface acoustic wave device, comprising a pair of inter-digitated comb electrodes, wherein the pair of inter-digitated comb electrodes comprises neighboring electrode means belonging to different comb electrodes and having a pitch p being defined as the edge-to-edge electrode means distance between two neighboring electrode means, the pitch p satisfying the Bragg condition; characterized in that the pair of inter-digitated comb electrodes comprises at least one region in which two or more neighboring electrode means belong to the same comb electrode while having an edge-to-edge distance to each other corresponding to the pitch p. The present disclosure relates also to a surface acoustic wave filter device.