US 12,191,826 B2
Method for adjusting power amplifier impedance
William J. Domino, Yorba Linda, CA (US); Craig Joseph Christmas, Irvine, CA (US); Joseph Anton Pusl, III, Encinitas, CA (US); and René Rodríguez, Rancho Santa Margarita, CA (US)
Assigned to Skyworks Solutions, Inc., Irvine, CA (US)
Filed by Skyworks Solutions, Inc., Irvine, CA (US)
Filed on Sep. 23, 2021, as Appl. No. 17/448,663.
Claims priority of provisional application 63/085,040, filed on Sep. 29, 2020.
Claims priority of provisional application 63/085,006, filed on Sep. 29, 2020.
Prior Publication US 2022/0103136 A1, Mar. 31, 2022
Int. Cl. H03F 3/14 (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 1/56 (2013.01); H03F 1/565 (2013.01); H03F 3/195 (2013.01); H04B 1/0458 (2013.01); H03F 2200/387 (2013.01); H03F 2200/451 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method of adjusting an impedance of a power amplifier of a radio frequency system for matching with a switch die, the method comprising:
connecting the power amplifier to the switch die via an impedance adjustment circuit, the impedance adjustment circuit including an input node configured to receive a radio frequency signal from the power amplifier, an output node configured to provide the radio frequency signal to the switch die, a plurality of electrical components arranged between the input node and the output node, and at least one switch configured to selectively electrically connect at least one of the electrical components to the input node and the output node;
determining a level of distortion of the radio frequency system for each of a plurality of states of the at least one switch; and
controlling the at least one switch to enter the state of the plurality of states that minimizes the level of distortion of the radio frequency system.