Patent · US Active

Composite cascode power amplifiers for envelope tracking applications

US11855595B2 · kind B2 · utility

3Cited by

198References

20Claims

0Family size

Assignee

Skyworks Solutions, Inc. · US

Inventors

Aleksey A. Lyalin · Moorpark, US
Huiming Xu · Newbury Park, US
Shayan Farahvash · Sylvia Park, US
Reinhard Mahnkopf · Oberhaching, DE

Key dates

Filing date	May 17, 2021
Grant date	Dec 26, 2023
Priority date	—
Expiry date	Mar 4, 2042

Classification

Technology area (CPC H)Electricity
CPC primaryH03F2200/451
WIPO fieldBasic communication processes
WIPO sectorElectrical engineering

Abstract

Composite cascode power amplifiers for envelope tracking applications are provided herein. In certain embodiments, an envelope tracking system includes a composite cascode power amplifier that amplifies a radio frequency (RF) signal and that receives power from a power amplifier supply voltage, and an envelope tracker that generates the power amplifier supply voltage based on an envelope of the RF signal. The composite cascode power amplifier includes an enhancement mode (E-MODE) field-effect transistor (FET) for amplifying the RF signal and a depletion mode (D-MODE) FET in cascode with the E-MODE FET.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.