US 12,218,649 B2
Electro acoustic resonator with suppressed transversal gap mode excitation and reduced transversal modes
Christian Huck, Munich (DE)
Assigned to RF360 Singapore Pte. Ltd., Singapore (SG)
Filed by RF360 Singapore Pte. Ltd., Republic Plaza (SG)
Filed on Nov. 21, 2023, as Appl. No. 18/515,618.
Application 18/515,618 is a continuation of application No. 17/294,638, granted, now 11,876,504, previously published as PCT/EP2019/082928, filed on Nov. 28, 2019.
Claims priority of application No. 102018131952.5 (DE), filed on Dec. 12, 2018.
Prior Publication US 2024/0162884 A1, May 16, 2024
Int. Cl. H03H 9/25 (2006.01); H03H 3/08 (2006.01); H03H 9/02 (2006.01); H03H 9/145 (2006.01); H03H 9/64 (2006.01)
CPC H03H 9/25 (2013.01) [H03H 3/08 (2013.01); H03H 9/02858 (2013.01); H03H 9/02992 (2013.01); H03H 9/145 (2013.01); H03H 9/6406 (2013.01)] 23 Claims
OG exemplary drawing
 
1. An electro acoustic resonator comprising:
a piezoelectric material;
an electrode structure arranged on or above the piezoelectric material, wherein the electrode structure comprises a busbar and a first set of electrode fingers extending from the busbar, the electrode structure further comprising a second set of electrode fingers extending towards the busbar and interdigitated with the first set of electrode fingers; and
a gap structure arranged on or above the piezoelectric material, wherein the gap structure comprises conductor strips positioned within a gap between the busbar and one or more of the second set of electrode fingers, and wherein the conductor strips extend in a direction different than an extension direction of the first set of electrode fingers.