US 12,341,495 B2
Switchable acoustic wave filter and related multiplexers
Weimin Sun, Santa Rosa Valley, CA (US); Hai H. Ta, San Diego, CA (US); and David Richard Pehlke, Westlake Village, CA (US)
Assigned to Skyworks Solutions, Inc., Irvine, CA (US)
Filed by Skyworks Solutions, Inc., Irvine, CA (US)
Filed on May 24, 2022, as Appl. No. 17/664,757.
Claims priority of provisional application 63/208,600, filed on Jun. 9, 2021.
Claims priority of provisional application 63/208,620, filed on Jun. 9, 2021.
Claims priority of provisional application 63/194,760, filed on May 28, 2021.
Prior Publication US 2022/0385273 A1, Dec. 1, 2022
Int. Cl. H03H 9/64 (2006.01); H01Q 9/04 (2006.01); H03H 9/02 (2006.01); H03H 9/17 (2006.01); H03H 9/72 (2006.01)
CPC H03H 9/6406 (2013.01) [H01Q 9/04 (2013.01); H03H 9/02007 (2013.01); H03H 9/17 (2013.01); H03H 9/725 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A multiplexer with a switchable acoustic wave filter, the multiplexer comprising:
a first filter configured to receive a radio frequency signal, the first filter being a band stop filter having a stop band, the first filter including one or more acoustic wave resonators, switchable acoustic wave resonators, and a switch configurable into at least a first state and a second state, the switch configured to select a different subset of the switchable acoustic wave resonators to filter the radio frequency signal together with at least the one or more acoustic wave resonators in the first state than in the second state, the second state being associated with co-existence, the stop band covering a smaller frequency range for the second state that is associated with co-existence relative to the first state; and
a second filter connected to the first filter.