US 12,323,169 B2
Out-of-band rejection for acoustic-wave filters
Mohammad Jehad Almalkawi, Stokesdale, NC (US)
Assigned to Skyworks Solutions, Inc., Irvine, CA (US)
Filed by Skyworks Solutions, Inc., Irvine, CA (US)
Filed on Aug. 24, 2022, as Appl. No. 17/894,911.
Claims priority of provisional application 63/237,081, filed on Aug. 25, 2021.
Claims priority of provisional application 63/237,083, filed on Aug. 25, 2021.
Prior Publication US 2023/0074812 A1, Mar. 9, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H04B 1/00 (2006.01); H03H 7/075 (2006.01); H03H 7/09 (2006.01); H03H 9/25 (2006.01); H03H 9/64 (2006.01); H03H 7/01 (2006.01)
CPC H04B 1/0057 (2013.01) [H03H 7/075 (2013.01); H03H 7/09 (2013.01); H03H 9/25 (2013.01); H03H 9/6483 (2013.01); H03H 2007/013 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A radio frequency acoustic filter configured to allow transmission within a passband, the filter comprising:
first and second ports;
a series acoustic resonator and a first inductor connected in series between the first port and a node;
a second inductor connected between the node and the second port, the first inductor and the second inductor being mutually coupled;
a shunt acoustic resonator connected between the node and a ground potential; and
a third inductor connected between the first port and the second port.