US 12,176,853 B2
Integrated circuit devices with parallel power amplifier output paths
Rohit Chatterjee, Bangalore (IN)
Assigned to TEXAS INSTRUMENTS INCORPORATED, Dallas, TX (US)
Filed by TEXAS INSTRUMENTS INCORPORATED, Dallas, TX (US)
Filed on May 28, 2021, as Appl. No. 17/334,527.
Application 17/334,527 is a continuation of application No. 16/564,881, filed on Sep. 9, 2019, granted, now 11,050,387.
Prior Publication US 2021/0288613 A1, Sep. 16, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. H03F 1/02 (2006.01); H03F 3/213 (2006.01); H03F 3/45 (2006.01); H03H 7/38 (2006.01); H03K 17/56 (2006.01)
CPC H03F 1/0211 (2013.01) [H03F 3/213 (2013.01); H03F 3/45071 (2013.01); H03H 7/38 (2013.01); H03K 17/56 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A circuit comprising:
a first amplifier path;
a second amplifier path having first and second outputs;
a balun including first and second coils, the first coil coupled to the first amplifier path and the second coil coupled to the first and second outputs of the second amplifier path;
a matching network coupled to the balun, the matching network comprising:
first and second capacitors;
a first switch with a first terminal and a second terminal, the first terminal of the first switch coupled to a first terminal of the second coil of the balun and to the first output of the second amplifier path, the second terminal of the first switch coupled to a common node;
a second switch with a first terminal and a second terminal, the first terminal of the second switch coupled to a second terminal of the second coil of the balun via the first capacitor and coupled to the second output of the second amplifier path, the second terminal of the second switch coupled to the common node; and
a third switch with a first terminal and a second terminal, the first terminal of the third switch coupled to the second terminal of the second coil of the balun via the second capacitor and coupled to the first terminal of the second switch via the first and second capacitors, the second terminal of the third switch coupled to the common node; and
a controller coupled to the first and second amplifier paths.