US 12,456,963 B2
Bandpass filter having an additional shunt resonator circuit
Olzhas Tazabekov, Toronto (CA)
Assigned to Skyworks Solutions, Inc., Irvine, CA (US)
Filed by Skyworks Solutions, Inc., Irvine, CA (US)
Filed on Mar. 21, 2023, as Appl. No. 18/124,143.
Claims priority of provisional application 63/328,906, filed on Apr. 8, 2022.
Prior Publication US 2023/0327646 A1, Oct. 12, 2023
Int. Cl. H03H 9/54 (2006.01); H03H 9/205 (2006.01); H03H 9/25 (2006.01); H03H 9/56 (2006.01); H03H 9/64 (2006.01)
CPC H03H 9/542 (2013.01) [H03H 9/205 (2013.01); H03H 9/25 (2013.01); H03H 9/568 (2013.01); H03H 9/6483 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A bandpass filter comprising:
a series resonator circuit disposed between an input and an output of the bandpass filter;
a first shunt resonator circuit electrically connected to the series resonator circuit and to ground; and
a second shunt resonator circuit electrically connected to the series resonator circuit and to ground, the second shunt resonator circuit configured to have one or more frequency pairs with an antiresonant frequency and a first resonant frequency, for at least one frequency pair the antiresonant frequency is within a passband of the bandpass filter and the first resonant frequency at a higher frequency than the antiresonant frequency.