US 12,255,623 B2
Bulk acoustic wave resonator having multiple anti-resonant frequencies
Yiliu Wang, Irvine, CA (US); Jiansong Liu, Fremont, CA (US); and Tomoya Komatsu, Irvine, CA (US)
Assigned to Skyworks Solutions, Inc., Irvine, CA (US)
Filed by Skyworks Solutions, Inc., Irvine, CA (US)
Filed on Nov. 18, 2021, as Appl. No. 17/455,642.
Claims priority of provisional application 63/130,237, filed on Dec. 23, 2020.
Claims priority of provisional application 63/130,209, filed on Dec. 23, 2020.
Prior Publication US 2022/0200572 A1, Jun. 23, 2022
Int. Cl. H03H 9/56 (2006.01); H03H 9/17 (2006.01); H03H 9/205 (2006.01); H03H 9/54 (2006.01)
CPC H03H 9/568 (2013.01) [H03H 9/173 (2013.01); H03H 9/175 (2013.01); H03H 9/205 (2013.01); H03H 9/547 (2013.01); H03H 9/564 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An acoustic wave filter configured to filter a radio frequency signal, the acoustic wave filter comprising:
a plurality of shunt acoustic wave resonators; and
a plurality of series acoustic wave resonators, the plurality of series acoustic wave resonators including a bulk acoustic wave resonator having at least a first anti-resonant frequency and a second anti-resonant frequency, the second anti-resonant frequency being different than the first anti-resonant frequency, the plurality of series acoustic wave resonators and the plurality of shunt acoustic wave resonators together configured to filter the radio frequency signal, the acoustic wave filter being a band pass filter having a passband, and the first anti-resonant frequency and the second anti-resonant frequency both impact the passband.