US 12,231,111 B2
Surface acoustic wave electroacoustic device for reduced transversal modes
Markus Mayer, Taufkirchen (DE); Philipp Geselbracht, Haar (DE); Stefan Ammann, Grosskarolinenfeld (DE); Thomas Ebner, Munich (DE); and Manuel Sabbagh, Dorfen (DE)
Assigned to RF360 Singapore Pte. Ltd., Singapore (SG)
Filed by RF360 Singapore Pte. Ltd., Republic Plaza (SG)
Filed on Apr. 27, 2021, as Appl. No. 17/302,224.
Claims priority of provisional application 63/017,955, filed on Apr. 30, 2020.
Prior Publication US 2021/0376812 A1, Dec. 2, 2021
Int. Cl. H03H 9/145 (2006.01); H03H 9/02 (2006.01); H03H 9/25 (2006.01)
CPC H03H 9/145 (2013.01) [H03H 9/02559 (2013.01); H03H 9/25 (2013.01)] 29 Claims
OG exemplary drawing
 
1. An electroacoustic device, comprising:
a piezoelectric material; and
an electrode structure, comprising:
a first busbar and a second busbar;
electrode fingers arranged in an interdigitated manner and comprising a first plurality of fingers connected to the first busbar and a second plurality of fingers connected to the second busbar;
a first conductive structure disposed in a plurality of respective regions between adjacent fingers of the first plurality of fingers and disposed between the first busbar and the second plurality of fingers, the first conductive structure having a height that is less than a height of the first plurality of fingers; and
a second conductive structure disposed in a plurality of respective regions between adjacent fingers of the second plurality of fingers and disposed between the second busbar and the first plurality of fingers, the second conductive structure having a height that is less than a height of the second plurality of fingers.