US 12,323,114 B2
Biasing solution for push-pull power amplifier for low loadline and high common mode rejection ratio background
Xiaoqiang Li, Thousand Oaks, CA (US); Shihan Qin, Newbury Park, CA (US); Nathan Lucas Nuzum, Quasqueton, IA (US); and Tianming Chen, Newbury Park, CA (US)
Assigned to SKYWORKS SOLUTIONS, INC., Irvine, CA (US)
Filed by SKYWORKS SOLUTIONS, INC., Irvine, CA (US)
Filed on Jun. 7, 2022, as Appl. No. 17/805,714.
Claims priority of provisional application 63/197,597, filed on Jun. 7, 2021.
Prior Publication US 2022/0393654 A1, Dec. 8, 2022
Int. Cl. H03F 3/24 (2006.01); H04B 1/40 (2015.01)
CPC H03F 3/245 (2013.01) [H04B 1/40 (2013.01); H03F 2200/09 (2013.01); H03F 2200/294 (2013.01)] 23 Claims
OG exemplary drawing
 
1. A wireless device comprising:
a power amplifier configured to output a balanced amplified signal;
an antenna configured to transmit and receive signals;
a balun coupled to the power amplifier via a plurality of wirebond connections and coupled to the antenna, and being configured to receive the balanced amplified signal and output, based on the balanced amplified signal, an unbalanced amplified signal to the antenna; and
at least one capacitor coupled in series between the power amplifier and the balun.