Back to results
US 2019/0356277 A1Published application
90-degree lumped and distributed doherty impedance inverter
AssigneeMACOM Technology Solutions Holdings, Inc.
InventorsGerard Bouisse, Andrew Alexander, Andrew Patterson
Life of this patent
Estimating the term…
Abstract
Apparatus and methods for a modified Doherty amplifier operating at gigahertz frequencies are described. The combining of signals from a main amplifier and a peaking amplifier occur prior to impedance matching of the amplifier's output to a load. An integrated distributed inductor may be used in an impedance inverter to combine the signals. A size of the impedance element can be selected by patterning during manufacture to tune the amplifier and to allow power scaling for the amplifier.
Claims23
A Doherty amplifier comprising:
- an RF input;
- a main amplifier connected to the RF input;
- a peaking amplifier connected to the RF input;
- a combining node at which an output from the main amplifier combines with an output from the peaking amplifier;
- and
- an impedance inverter comprising an integrated distributed inductor connected between an output of the main amplifier and the combining node.
3 more elements
23-61. (canceled)
Dependencies are inferred from the claim text.