US 12,244,294 B2
Multiplexer with acoustic wave filter including different types of resonators
Yiliu Wang, Irvine, CA (US); Nan Wu, Irvine, 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 Mar. 7, 2022, as Appl. No. 17/653,847.
Claims priority of provisional application 63/160,525, filed on Mar. 12, 2021.
Claims priority of provisional application 63/160,509, filed on Mar. 12, 2021.
Claims priority of provisional application 63/160,316, filed on Mar. 12, 2021.
Prior Publication US 2022/0294422 A1, Sep. 15, 2022
Int. Cl. H04B 1/40 (2015.01); H03F 3/19 (2006.01); H03H 9/02 (2006.01); H03H 9/25 (2006.01); H03H 9/64 (2006.01); H03H 9/72 (2006.01); H04B 1/00 (2006.01)
CPC H03H 9/25 (2013.01) [H03F 3/19 (2013.01); H03H 9/02834 (2013.01); H03H 9/6483 (2013.01); H03H 9/725 (2013.01); H04B 1/0057 (2013.01); H04B 1/40 (2013.01); H03F 2200/451 (2013.01)] 22 Claims
OG exemplary drawing
 
1. A multiplexer including one or more acoustic wave filters, the multiplexer comprising:
a first filter configured to filter a radio frequency signal, the first filter being a receive filter, the first filter including a plurality of acoustic wave resonators of a first type and a shunt acoustic wave resonator of a second type, and the shunt acoustic wave resonator of the second type having lower second harmonic distortion than each of the plurality of acoustic wave resonators of the first type; and
a second filter coupled to the first filter at a common node, the second filter having a passband, and the shunt acoustic wave resonator of the second type having a resonant frequency in the passband.