US 12,470,184 B2
Multi-mode power amplifier signal switching
Lui Ray Lam, Lexington, MA (US)
Assigned to Skyworks Solutions, Inc., Irvine, CA (US)
Filed by SKYWORKS SOLUTIONS, INC., Irvine, CA (US)
Filed on Mar. 31, 2022, as Appl. No. 17/709,795.
Claims priority of provisional application 63/169,037, filed on Mar. 31, 2021.
Prior Publication US 2022/0321069 A1, Oct. 6, 2022
Int. Cl. H03F 1/14 (2006.01); H03F 3/195 (2006.01); H03F 3/24 (2006.01); H03F 3/72 (2006.01)
CPC H03F 3/245 (2013.01) [H03F 3/195 (2013.01); H03F 3/72 (2013.01); H03F 2200/318 (2013.01); H03F 2200/451 (2013.01); H03F 2200/537 (2013.01); H03F 2200/541 (2013.01); H03F 2203/7221 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A switching circuit comprising:
a first transistor;
a transformer including a first inductor and a second inductor that is co-centric with the first inductor;
a first switch;
a second switch;
a second transistor;
a first output;
a second output; and
a matching network coupled between the second output and the second transistor;
the first inductor coupled to the first transistor, a first end of the second inductor, the first switch, and the first output together at a first node, a second end of the second inductor coupled to the second switch and the second transistor together at a second node, and the second output coupled to the second transistor.