US 12,255,606 B2
Lamb wave loop circuit for acoustic wave filter
Chih-Ming Lin, Fremont, CA (US); Jie Zou, Irvine, CA (US); Toru Jibu, Irvine, CA (US); Chun Sing Lam, San Jose, CA (US); and Joshua James Caron, Madison, NC (US)
Assigned to Skyworks Solutions, Inc., Irvine, CA (US)
Filed by Skyworks Solutions, Inc., Irvine, CA (US)
Filed on Sep. 28, 2021, as Appl. No. 17/449,214.
Application 17/449,214 is a continuation of application No. 16/287,891, filed on Feb. 27, 2019, granted, now 11,165,406.
Claims priority of provisional application 62/637,641, filed on Mar. 2, 2018.
Prior Publication US 2022/0014170 A1, Jan. 13, 2022
Int. Cl. H03H 9/02 (2006.01); H03H 9/13 (2006.01); H03H 9/17 (2006.01); H03H 9/205 (2006.01); H03H 9/46 (2006.01); H03H 9/56 (2006.01); H03H 9/58 (2006.01); H03H 9/60 (2006.01); H03H 9/70 (2006.01); H01Q 1/50 (2006.01); H03F 3/21 (2006.01); H04B 1/40 (2015.01)
CPC H03H 9/02228 (2013.01) [H03H 9/02007 (2013.01); H03H 9/02031 (2013.01); H03H 9/02574 (2013.01); H03H 9/13 (2013.01); H03H 9/173 (2013.01); H03H 9/205 (2013.01); H03H 9/564 (2013.01); H03H 9/568 (2013.01); H03H 9/587 (2013.01); H03H 9/605 (2013.01); H03H 9/706 (2013.01); H01Q 1/50 (2013.01); H03F 3/21 (2013.01); H03F 2200/451 (2013.01); H03H 9/46 (2013.01); H04B 1/40 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An acoustic wave filter assembly comprising:
an acoustic wave filter configured to filter a radio frequency signal, the acoustic wave filter including a Lamb wave resonator and a bulk acoustic wave resonator; and
a loop circuit coupled to the acoustic wave filter, the loop circuit configured to generate an anti-phase signal to a target signal at a particular frequency, the loop circuit including a Lamb wave element and a second Lamb wave element, the Lamb wave element being on a same substrate as the bulk acoustic wave resonator and the Lamb wave resonator.