US 12,244,271 B2
Fan-out multi-stage amplifier with configurable paths
Kyle David Holland, San Diego, CA (US); Jang Joon Lee, San Diego, CA (US); Rahul Kodkani, San Diego, CA (US); Aleksandar Miodrag Tasic, San Diego, CA (US); Chih-Fan Liao, San Diego, CA (US); Lai Kan Leung, San Marcos, CA (US); and Chiewcharn Narathong, Laguna Niguel, CA (US)
Assigned to QUALCOMM Incorporated, San Diego, CA (US)
Filed by QUALCOMM Incorporated, San Diego, CA (US)
Filed on Sep. 24, 2021, as Appl. No. 17/448,870.
Prior Publication US 2023/0099161 A1, Mar. 30, 2023
Int. Cl. H03F 3/68 (2006.01); H03F 1/56 (2006.01); H03F 3/19 (2006.01); H03F 3/21 (2006.01)
CPC H03F 3/19 (2013.01) [H03F 1/56 (2013.01); H03F 3/211 (2013.01); H03F 2200/222 (2013.01); H03F 2200/294 (2013.01); H03F 2200/451 (2013.01)] 32 Claims
OG exemplary drawing
 
1. An apparatus, comprising:
at least one input node;
a plurality of amplifier output nodes;
an amplifier connected to the at least one input node and to the plurality of amplifier output nodes, and configured to amplify RF signals input at the input node for output at the plurality of amplifier output nodes, the amplifier comprising:
a first stage comprising at least one first low noise amplifier (LNA) configured to be coupled to the at least one input node and to at least one first stage output node; and
a fan-out stage comprising at least two second LNAs configured to be coupled to the at least one first stage output node and to the plurality of amplifier output nodes, wherein the at least two second LNAs are configured to provide a matched impedance to the at least one first LNA.