US 11,990,876 B2
Multi-mode multi-port driver for transceiver interface
Yung-Chung Lo, San Diego, CA (US); Hyejeong Song, San Diego, CA (US); Bhushan Shanti Asuri, San Diego, CA (US); and Sahar Nozari, San Diego, CA (US)
Assigned to QUALCOMM Incorporated, San Diego, CA (US)
Filed by QUALCOMM INCORPORATED, San Diego, CA (US)
Filed on Sep. 17, 2021, as Appl. No. 17/478,431.
Claims priority of provisional application 63/233,585, filed on Aug. 16, 2021.
Prior Publication US 2023/0049925 A1, Feb. 16, 2023
Int. Cl. H04B 1/40 (2015.01); H03F 1/02 (2006.01); H03F 3/193 (2006.01); H03F 3/21 (2006.01); H03F 3/24 (2006.01)
CPC H03F 3/245 (2013.01) [H03F 1/0211 (2013.01); H04B 1/40 (2013.01); H03F 2200/294 (2013.01); H03F 2200/451 (2013.01)] 28 Claims
OG exemplary drawing
 
1. A transceiver interface circuit, comprising:
a driver amplifier (DA);
a load line impedance modulation circuit coupled to the DA; and
multiple selectable output ports coupled to the load line impedance modulation circuit, an impedance presented by the load line impedance modulation circuit to the DA being adjustable dependent on at least a number of output ports coupled to the load line impedance modulation circuit.