US 12,143,090 B2
Surface acoustic wave (SAW) structures with transverse mode suppression
Tsuyoshi Yokoyama, Hyogo (JP); Tabito Tanaka, Osaka (JP); and Jun Sung Chun, High Point, NC (US)
Assigned to Qorvo US, Inc., Greensboro, NC (US)
Filed by Qorvo US, Inc., Greensboro, NC (US)
Filed on Oct. 29, 2021, as Appl. No. 17/452,825.
Prior Publication US 2023/0133161 A1, May 4, 2023
Int. Cl. H03H 9/02 (2006.01); H03H 9/54 (2006.01); H03H 9/64 (2006.01)
CPC H03H 9/02015 (2013.01) [H03H 9/54 (2013.01); H03H 9/6453 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A surface acoustic wave (SAW) filter comprising:
a first interdigitated electrode consisting of a first plurality of fingers, each finger of the first plurality comprising:
a substantially uniform first width along a longitudinal axis of the finger for a first length and a second width along the longitudinal axis of the finger for a second length at a terminal end portion of the finger; and
a second interdigitated electrode consisting of a second plurality of second fingers, each second finger of the second plurality comprising:
a substantially uniform third width along a second longitudinal axis of the second finger for a third length and a fourth width along the second longitudinal axis of the second finger for a fourth length at a second terminal end of the second finger;
wherein each of the first plurality of fingers has a respective opposite one of the second plurality of second fingers, and each pair of first finger and second finger has a gap therebetween.