US 12,191,820 B2
Low noise amplifier and receiver
Byoung Joong Kang, Suwon-si (KR)
Assigned to Samsung Electronics Co., Ltd., Gyeonggi-do (KR)
Filed by Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed on Jul. 28, 2022, as Appl. No. 17/876,053.
Claims priority of application No. 10-2021-0154903 (KR), filed on Nov. 11, 2021; and application No. 10-2022-0007169 (KR), filed on Jan. 18, 2022.
Prior Publication US 2023/0142523 A1, May 11, 2023
Int. Cl. H04B 1/16 (2006.01); H03F 1/02 (2006.01); H03F 1/26 (2006.01); H03F 3/19 (2006.01); H03F 3/45 (2006.01)
CPC H03F 3/19 (2013.01) [H04B 1/16 (2013.01); H03F 2200/294 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A low noise amplifier comprising:
at least one input port configured to receive an input signal including a carrier;
first to third output ports connected to first to third load circuits, respectively, and configured to transmit an output signal;
a first amplifier stage comprising a first type gain stage connected to the input port and first to third first type drive stages connected to the first to third output ports, respectively; and
second to third amplifier stages, each comprising a second type gain stage and a second type drive stage,
wherein the low noise amplifier is configured to vary an impedance of an input transistor included in each of the first type gain stage and the second type gain stage, so that an input impedance is uniform even when operating in a plurality of operation modes.