US 12,489,426 B2
Surface-acoustic-wave (SAW) filter with an electrical conductor having a floating potential
Thomas Forster, Munich (DE); Markus Mayer, Taufkirchen (DE); Vikrant Chauhan, Munich (DE); Stefan Ammann, Grosskarolinenfeld (DE); Manuel Sabbagh, Dorfen (DE); and Stefan Freisleben, Neubiberg (DE)
Assigned to RF360 Singapore Pte. Ltd., Republic Plaza (SG)
Filed by RF360 SINGAPORE PTE. LTD., Republic Plaza (SG)
Filed on Feb. 15, 2022, as Appl. No. 17/651,211.
Prior Publication US 2023/0261641 A1, Aug. 17, 2023
Int. Cl. H03H 9/02 (2006.01); H03H 3/08 (2006.01); H03H 9/145 (2006.01); H03H 9/64 (2006.01); H04B 1/40 (2015.01)
CPC H03H 9/6489 (2013.01) [H03H 3/08 (2013.01); H03H 9/02992 (2013.01); H03H 9/14544 (2013.01); H04B 1/40 (2013.01)] 32 Claims
OG exemplary drawing
 
1. An apparatus comprising:
a surface-acoustic-wave filter comprising:
a piezoelectric layer; and
an electrode structure disposed on a surface of the piezoelectric layer, the electrode structure comprising:
a first comb-shaped structure comprising a first busbar and a first set of fingers extending from the first busbar;
a second comb-shaped structure comprising a second busbar and a second set of fingers extending from the second busbar; and
at least one electrical conductor positioned between the first comb-shaped structure and the second comb-shaped structure such that a gap separates the at least one electrical conductor from the first comb-shaped structure and the second comb-shaped structure, wherein the at least one electrical conductor comprises:
a first electrical conductor positioned between the first busbar and a finger of the second set of fingers;
a second electrical conductor positioned between the second busbar and a finger of the first set of fingers;
a third electrical conductor positioned between the first busbar and another finger of the second set of fingers; and
a fourth electrical conductor positioned between the second busbar and another finger of the first set of fingers.