US 12,244,298 B2
Multiplexer with acoustic assisted trap circuit
Li Chen, Irvine, CA (US); Xianyi Li, Irvine, CA (US); Zhi Shen, Aliso Viejo, CA (US); and Renfeng Jin, Irvine, CA (US)
Assigned to Skyworks Solutions, Inc., Irvine, CA (US)
Filed by Skyworks Solutions, Inc., Irvine, CA (US)
Filed on Jun. 23, 2022, as Appl. No. 17/808,407.
Claims priority of provisional application 63/216,804, filed on Jun. 30, 2021.
Claims priority of provisional application 63/216,802, filed on Jun. 30, 2021.
Prior Publication US 2023/0006651 A1, Jan. 5, 2023
Int. Cl. H03H 9/56 (2006.01); H03H 9/64 (2006.01); H03H 9/70 (2006.01); H03H 9/72 (2006.01); H04B 1/40 (2015.01)
CPC H03H 9/568 (2013.01) [H03H 9/6483 (2013.01); H03H 9/70 (2013.01); H03H 9/72 (2013.01); H04B 1/40 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A multiplexer with an acoustic assisted trap circuit, the multiplexer comprising:
a first acoustic wave filter; and
a plurality of additional acoustic wave filters coupled together with the first acoustic wave filter at an antenna node, the plurality of additional acoustic wave filters including a second acoustic wave filter that includes an acoustic wave resonator and an impedance network that are together configured to provide a trap for a harmonic associated with the first acoustic wave filter, the second acoustic wave filter having an edge of a passband that is farther from the harmonic associated with the first acoustic wave filter than any other filter of the plurality of additional acoustic wave filters.