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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 11394347 B1

PDFFull Text
Date of Patent:
Jul. 19, 2022

Filed:

Feb. 23, 2021

Apparatus and methods for bias switching of power amplifiers

Applicant:

Skyworks Solutions, Inc., Irvine, CA (US);

Inventors:

Netsanet Gebeyehu, San Jose, CA (US);

Srivatsan Jayaraman, Santa Clara, CA (US);

Edward James Anthony, Robins, IA (US);

Assignee:

Skyworks Solutions, Inc., Irvine, CA (US);

Attorney:

Knobbe, Martens, Olson & Bear, LLP

Primary Examiner:

Khanh V Nguyen

Int. Cl.
CPC ...
H03F 3/04 (2006.01); H03F 1/02 (2006.01); H03F 3/193 (2006.01); H03F 3/19 (2006.01); H03F 3/24 (2006.01); H03F 1/56 (2006.01); H03F 3/195 (2006.01); H04B 1/04 (2006.01); H04B 1/3827 (2015.01); H01L 25/065 (2006.01); H03F 1/30 (2006.01); H03F 3/191 (2006.01);
U.S. Cl.
CPC ...
H03F 1/0216 (2013.01); H03F 1/0227 (2013.01); H03F 1/0266 (2013.01); H03F 1/56 (2013.01); H03F 3/19 (2013.01); H03F 3/193 (2013.01); H03F 3/195 (2013.01); H03F 3/24 (2013.01); H03F 3/245 (2013.01); H04B 1/04 (2013.01); H01L 25/0655 (2013.01); H01L 2224/16227 (2013.01); H01L 2224/48227 (2013.01); H01L 2924/15313 (2013.01); H01L 2924/19041 (2013.01); H01L 2924/19042 (2013.01); H01L 2924/19043 (2013.01); H01L 2924/19105 (2013.01); H03F 1/302 (2013.01); H03F 3/04 (2013.01); H03F 3/191 (2013.01); H03F 2200/102 (2013.01); H03F 2200/105 (2013.01); H03F 2200/222 (2013.01); H03F 2200/318 (2013.01); H03F 2200/336 (2013.01); H03F 2200/451 (2013.01); H04B 1/3827 (2013.01); H04B 2001/045 (2013.01); H04B 2001/0416 (2013.01);
Abstract

Apparatus and methods for bias switching of power amplifiers are provided herein. In certain configurations, a power amplifier system includes a power amplifier that provides amplification to a radio frequency (RF) signal, a power management circuit that controls a voltage level of a supply voltage of the power amplifier, and a bias control circuit that biases the power amplifier. The power management circuit is operable in multiple supply control modes, such as an average power tracking (APT) mode and an envelope tracking (ET) mode. The bias control circuit is configured to switch a bias of the power amplifier based on the supply control mode of the power management circuit.

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