US 12,136,901 B2
Broadband, high-efficiency, non-modulating power amplifier architecture
Bi Ngoc Pham, Oakville (CN); and Gerard Bouisse, Toulouse (FR)
Assigned to MACOM TECHNOLOGY SOLUTIONS HOLDINGS, INC., Lowell, MA (US)
Filed by MACOM Technology Solutions Holdings, Inc., Lowell, MA (US)
Filed on Nov. 2, 2021, as Appl. No. 17/517,170.
Application 17/517,170 is a continuation of application No. 16/639,105, granted, now 11,190,143, previously published as PCT/US2018/046754, filed on Aug. 14, 2018.
Prior Publication US 2022/0060151 A1, Feb. 24, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. H03F 1/02 (2006.01); H03F 1/08 (2006.01); H03F 1/42 (2006.01); H03F 3/21 (2006.01); H03F 3/213 (2006.01)
CPC H03F 1/0288 (2013.01) [H03F 1/083 (2013.01); H03F 1/42 (2013.01); H03F 3/211 (2013.01); H03F 3/213 (2013.01); H03F 2200/387 (2013.01); H03F 2200/432 (2013.01); H03F 2200/451 (2013.01); H03F 2200/543 (2013.01); H03F 2203/21106 (2013.01); H03F 2203/21139 (2013.01); H03F 2203/21142 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A power amplifier comprising:
a main amplifier connected in parallel with a first peaking amplifier in a first circuit branch;
a second peaking amplifier connected in parallel with a third peaking amplifier in a second circuit branch that is in parallel with the first circuit branch; and
a first impedance inverter in the first circuit branch and a second impedance inverter in the second circuit branch, wherein:
current ratios for the peaking amplifiers with respect to the main amplifier set a load impedance seen by the main amplifier to approximately a same value when the peaking amplifiers are fully amplifying received signals and when the peaking amplifiers are not amplifying received signals.