US 12,273,090 B2
Acoustic wave device with overtone mode
Yiliu Wang, Irvine, CA (US); and Rei Goto, Osaka (JP)
Assigned to Skyworks Solutions, Inc., Irvine, CA (US)
Filed by Skyworks Solutions, Inc., Irvine, CA (US)
Filed on Jan. 20, 2022, as Appl. No. 17/580,004.
Claims priority of provisional application 63/150,914, filed on Feb. 18, 2021.
Prior Publication US 2022/0263495 A1, Aug. 18, 2022
Int. Cl. H03H 9/02 (2006.01); H03H 9/13 (2006.01); H03H 9/56 (2006.01)
CPC H03H 9/02078 (2013.01) [H03H 9/0211 (2013.01); H03H 9/13 (2013.01); H03H 9/56 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An acoustic wave device comprising:
an acoustic reflector;
electrodes including a first electrode and a second electrode; and
a piezoelectric layer positioned between the first electrode and the second electrode, the acoustic wave device being sufficiently asymmetric on opposing sides of the piezoelectric layer over the acoustic reflector such that a main mode of the acoustic wave device is an overtone mode, a resonant frequency of the overtone mode is in a range from 5 gigahertz to 12 gigahertz, and the resonant frequency of the overtone mode is in a range from 1.5 to 2.5 times a resonant frequency of a fundamental mode of the acoustic wave device.