US 11,722,101 B2
90-degree lumped and distributed Doherty impedance inverter
Gerard Bouisse, Toulouse (FR); Andrew Alexander, Belfast (GB); and Andrew Patterson, Lisburn (GB)
Assigned to MACOM TECHNOLOGY SOLUTIONS HOLDINGS, INC., Lowell, MA (US)
Filed by MACOM Technology Solutions Holdings, Inc., Lowell, MA (US)
Filed on Dec. 17, 2021, as Appl. No. 17/554,617.
Application 17/554,617 is a continuation of application No. 16/530,293, filed on Aug. 2, 2019, granted, now 11,233,483.
Application 16/530,293 is a continuation in part of application No. PCT/IB2017/000727, filed on Feb. 2, 2017.
Application PCT/IB2017/000727 is a continuation in part of application No. PCT/IB2017/000717, filed on Feb. 2, 2017.
Application PCT/IB2017/000717 is a continuation in part of application No. PCT/IB2017/000722, filed on Feb. 2, 2017.
Prior Publication US 2022/0109406 A1, Apr. 7, 2022
Int. Cl. H03F 3/68 (2006.01); H03F 1/02 (2006.01); H03F 1/56 (2006.01); H03F 3/195 (2006.01); H01L 23/66 (2006.01); H03F 3/24 (2006.01)
CPC H03F 1/0288 (2013.01) [H01L 23/66 (2013.01); H03F 1/565 (2013.01); H03F 3/195 (2013.01); H03F 3/245 (2013.01); H01L 2223/6611 (2013.01); H01L 2223/6655 (2013.01); H03F 2200/451 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A Doherty amplifier comprising:
an RF input;
a main amplifier connected to the RF input;
a peaking amplifier connected to the RF input;
an impedance inverter comprising an integrated distributed inductor connected between an output of the main amplifier and an output of the peaking amplifier; and
an output impedance-matching element comprising an output strip line, a shunt capacitor connected between the output strip line and ground, an output capacitor connected between the output strip line and an output bonding pad, and an inductive strip line connected between the output bonding pad and ground.