US 12,463,669 B2
Shared filter for transmission and reception
Sunghyun Park, Campbell, CA (US); Jinbo Li, San Jose, CA (US); and Ara Bicakci, Sunol, CA (US)
Assigned to QUALCOMM Incorporated, San Diego, CA (US)
Filed by Qualcomm Incorporated, San Diego, CA (US)
Filed on Jun. 21, 2023, as Appl. No. 18/338,755.
Prior Publication US 2024/0429946 A1, Dec. 26, 2024
Int. Cl. H04B 1/52 (2015.01); H04B 1/00 (2006.01); H04B 1/04 (2006.01)
CPC H04B 1/0078 (2013.01) [H04B 1/0458 (2013.01); H04B 2001/0408 (2013.01)] 30 Claims
OG exemplary drawing
 
1. An apparatus comprising:
a wireless interface device comprising:
a transmit chain comprising a first component and a second component;
a receive chain comprising a third component and a fourth component; and
a filter circuit comprising an amplifier, the amplifier comprising a first stage and a second stage, the first stage comprising a transmit portion coupled to the second stage and a receive portion coupled to the second stage,
the transmit portion and the second stage coupled together in series between the first component and the second component of the transmit chain, and
the receive portion and the second stage coupled together in series between the third component and the fourth component of the receive chain.