US 12,170,536 B2
Amplifier with integrated notch filter
Karthik Tripurari Jayaraman, San Diego, CA (US); Bao Huu Lam, San Diego, CA (US); and Xingyi Hua, San Diego, CA (US)
Assigned to QUALCOMM Incorporated, San Diego, CA (US)
Filed by QUALCOMM Incorporated, San Diego, CA (US)
Filed on Apr. 7, 2022, as Appl. No. 17/658,379.
Prior Publication US 2023/0327693 A1, Oct. 12, 2023
Int. Cl. H04B 1/04 (2006.01); H03F 1/26 (2006.01); H03H 7/01 (2006.01); H04B 1/10 (2006.01); H04K 3/00 (2006.01)
CPC H04B 1/1036 (2013.01) [H03F 1/26 (2013.01); H03H 7/01 (2013.01); H04B 1/0458 (2013.01); H04B 1/0475 (2013.01); H04K 3/20 (2013.01); H03H 2007/013 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An amplifier comprising:
an input node and an output node;
a first transistor and a second transistor, wherein a gate of the first transistor is coupled to the input node, a first terminal of the first transistor is coupled to a ground, a second terminal of the first transistor is coupled to a first terminal of the second transistor, and a second terminal of the second transistor is coupled to the output node;
a load circuitry coupled between a power supply and the second terminal of the second transistor;
an inductor, wherein a first terminal of the inductor is coupled to the ground through a first switch; and
a capacitor, wherein a first terminal of the capacitor is coupled to the first terminal of the second transistor and a second terminal of the capacitor is coupled to a second terminal of the inductor.