US 12,244,272 B2
Nonlinearity management in LNA bypass mode
Youngman Um, Austin, TX (US); and Xiaoling Guo, Austin, TX (US)
Assigned to PSEMI CORPORATION, San Diego, CA (US)
Filed by pSemi Corporation, San Diego, CA (US)
Filed on Dec. 13, 2021, as Appl. No. 17/549,820.
Prior Publication US 2023/0188099 A1, Jun. 15, 2023
Int. Cl. H03F 3/19 (2006.01); H03F 1/56 (2006.01)
CPC H03F 3/19 (2013.01) [H03F 1/56 (2013.01); H03F 2200/294 (2013.01); H03F 2200/387 (2013.01); H03F 2200/451 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A low noise amplifier (LNA) comprising
an amplifying element;
a first inductor configured to selectively couple the amplifying element to ground;
a first switch, and
a second switch disposed in series with the first inductor to form a series combination;
wherein:
the first switch is coupled across the series combination of the second switch and the first inductor;
the low noise amplifier is configured to operate selectively in one of a high gain, a low gain, or a bypass mode, and
in the bypass mode, the amplifying element is decoupled from ground.