US 12,483,209 B2
Methods and apparatus for power amplifier transformers
Tolga Dinc, Dallas, TX (US); Swaminathan Sankaran, Allen, TX (US); and Baher Haroun, Allen, TX (US)
Assigned to TEXAS INSTRUMENTS INCORPORATED, Dallas, TX (US)
Filed by Texas Instruments Incorporated, Dallas, TX (US)
Filed on Sep. 30, 2021, as Appl. No. 17/491,096.
Claims priority of provisional application 63/136,485, filed on Jan. 12, 2021.
Prior Publication US 2022/0224295 A1, Jul. 14, 2022
Int. Cl. H03F 3/68 (2006.01); H03F 1/56 (2006.01); H03F 3/195 (2006.01); H03F 3/24 (2006.01); H03F 3/26 (2006.01)
CPC H03F 3/245 (2013.01) [H03F 1/565 (2013.01); H03F 3/195 (2013.01); H03F 2200/451 (2013.01); H03F 2200/541 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An apparatus comprising:
a first transformer including:
a first transformer winding having an output at a first proximal end and a first center tap at a first distal end; and
a second transformer including:
a second transformer winding having an output at a second proximal end and a second center tap at a second distal end, the first proximal end having a first distance from the second proximal end and the first distal end having a second distance from the second distal end, the first distance less than the second distance.