US 12,334,880 B2
Reconfigurable power amplifiers with controllable input capacitance
Kunal Datta, Sunnyvale, CA (US); Jinghang Feng, San Jose, CA (US); and Srivatsan Jayaraman, Santa Clara, CA (US)
Assigned to Skyworks Solutions, Inc., Irvine, CA (US)
Filed by Skyworks Solutions, Inc., Irvine, CA (US)
Filed on May 12, 2022, as Appl. No. 17/663,077.
Claims priority of provisional application 63/201,953, filed on May 20, 2021.
Claims priority of provisional application 63/201,955, filed on May 20, 2021.
Prior Publication US 2022/0376662 A1, Nov. 24, 2022
Int. Cl. H03F 9/00 (2006.01); H03F 3/191 (2006.01); H03F 3/195 (2006.01); H03F 3/24 (2006.01); H03F 3/26 (2006.01); H03F 3/30 (2006.01); H04B 1/04 (2006.01); H04B 1/40 (2015.01)
CPC H03F 3/191 (2013.01) [H03F 3/195 (2013.01); H03F 3/245 (2013.01); H03F 3/26 (2013.01); H03F 3/3083 (2013.01); H04B 1/0458 (2013.01); H04B 1/40 (2013.01); H03F 2200/06 (2013.01); H03F 2200/09 (2013.01); H03F 2200/111 (2013.01); H03F 2200/451 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A mobile device comprising:
a transceiver configured to generate a first radio frequency signal of a first frequency band and a second radio frequency signal of a second frequency band; and
a front-end system including a push-pull power amplifier configured to selectively amplify one of the first radio frequency signal or the second radio frequency signal based on a band control signal, the push-pull power amplifier including an input balun, an output balun, and a pair of amplifiers coupled between the input balun and the output balun, the band control signal operable to control an input capacitance of the pair of amplifiers.