US 11,990,877 B2
Power amplifier output matching with suppressed harmonics
Yuan Cao, Shenzhen (CN); Yu-Jui Lin, Westlake Village, CA (US); and Russ Alan Reisner, Oxnard, CA (US)
Assigned to Skyworks Solutions, Inc., Irvine, CA (US)
Filed by Skyworks Solutions, Inc., Irvine, CA (US)
Filed on Sep. 26, 2022, as Appl. No. 17/935,520.
Application 17/935,520 is a continuation of application No. 16/893,133, filed on Jun. 4, 2020, granted, now 11,469,725.
Claims priority of provisional application 62/858,857, filed on Jun. 7, 2019.
Prior Publication US 2023/0198483 A1, Jun. 22, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H03F 3/191 (2006.01); H03F 1/56 (2006.01); H03F 3/195 (2006.01); H03F 3/24 (2006.01); H04B 1/04 (2006.01)
CPC H03F 3/245 (2013.01) [H03F 1/565 (2013.01); H03F 3/195 (2013.01); H04B 1/0458 (2013.01); H03F 2200/318 (2013.01); H03F 2200/451 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A power amplifier system comprising:
a power amplifier configured to generate an amplified radio frequency signal;
an output matching circuit including an input configured to receive the amplified radio frequency signal, first and second outputs, a first matching circuit connected between the input and the first output and configured to suppress harmonics of a first range of fundamental frequencies, and a second matching circuit electrically connected between the input and the second output and configured to suppress harmonics of a second range of fundamental frequencies different from the first range;
a first switch connected between the first output and a plurality of first filters each corresponding to one of a plurality of first communication bands, the first switch configured to selectively couple the first output to one of the first filters; and
a second switch connected between to the second output and a plurality of second filters each corresponding to one of a plurality of second communication bands, the second switch configured to selectively couple the second output to one of the second filters.