US 12,081,180 B2
Highly efficient dual-drive power amplifier for high reliability applications
Edgar Felipe Garay, Atlanta, GA (US); and Hua Wang, Atlanta, GA (US)
Assigned to Georgia Tech Research Corporation, Atlanta, GA (US)
Filed by Georgia Tech Research Corporation, Atlanta, GA (US)
Filed on Oct. 10, 2022, as Appl. No. 18/045,239.
Application 18/045,239 is a continuation of application No. 17/685,662, filed on Mar. 3, 2022, granted, now 11,469,726.
Application 17/685,662 is a continuation of application No. PCT/US2022/012068, filed on Jan. 12, 2022.
Claims priority of provisional application 63/136,264, filed on Jan. 12, 2021.
Prior Publication US 2023/0084449 A1, Mar. 16, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H03F 3/45 (2006.01); H03F 1/02 (2006.01); H03F 1/32 (2006.01); H03F 1/56 (2006.01); H03F 3/24 (2006.01)
CPC H03F 3/245 (2013.01) [H03F 1/0205 (2013.01); H03F 1/32 (2013.01); H03F 1/565 (2013.01); H03F 2200/222 (2013.01); H03F 2200/387 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A power amplifier comprising:
a passive transmission line-based coupling network configured to receive an input voltage signal on an input terminal and passively couple a scaled version of the input voltage signal to an output terminal, the coupling network comprising:
a first transmission line coupler comprising:
a first transmission line section T1 having a first end and a second end, wherein the first end is grounded, and the second end is configured to output a VS1 signal; and
a second transmission line section T2 having a first end and a second end, wherein the first end is configured to receive a first input signal Vin+, and wherein the second end is configured to output a VG2 signal, and wherein the first transmission line section T1 is electromagnetically coupled with the second transmission line section T2 to produce the VS1 signal responsive to receiving the input signal Vin+ at the first end of the second transmission line section T2; and
a transistor comprising
a gate terminal;
a drain terminal; and
a source terminal;
wherein the coupling network is further configured to:
drive the source terminal with the VS1 signal; to allow the source and drain terminals to swing in-phase.