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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 9876471 B1

PDFFull Text
Date of Patent:
Jan. 23, 2018

Filed:

Aug. 24, 2016

Apparatus and methods for power amplifiers with phase compensation

Applicant:

Skyworks Solutions, Inc., Woburn, MA (US);

Inventors:

Hardik Bhupendra Modi, Irvine, CA (US);

Sabah Khesbak, Irvine, CA (US);

Guohao Zhang, Nanjing, CN;

Assignee:

SKYWORKS SOLUTIONS, INC., Woburn, MA (US);

Attorney:

Knobbe Martens Olson & Bear LLP

Primary Examiner:

Quochien B Vuong

Int. Cl.
CPC ...
H01Q 11/12 (2006.01); H04B 1/38 (2015.01); H03G 3/00 (2006.01); H03F 3/16 (2006.01); H03F 1/02 (2006.01); H03F 1/56 (2006.01); H03F 3/191 (2006.01); H03F 3/19 (2006.01); H03F 3/24 (2006.01); H03G 3/30 (2006.01);
U.S. Cl.
CPC ...
H03F 1/0211 (2013.01); H03F 1/0222 (2013.01); H03F 1/56 (2013.01); H03F 1/565 (2013.01); H03F 3/19 (2013.01); H03F 3/191 (2013.01); H03F 3/245 (2013.01); H03G 3/3042 (2013.01); H03F 2200/102 (2013.01); H03F 2200/207 (2013.01); H03F 2200/387 (2013.01); H03F 2200/391 (2013.01); H03F 2200/451 (2013.01); H03F 2200/504 (2013.01); H03F 2203/21193 (2013.01); H04B 1/38 (2013.01);
Abstract

Apparatus and methods for phase compensation in power amplifiers are disclosed herein. In certain implementations, a method of phase compensation in a power amplifier includes amplifying a radio frequency signal using a power amplifier that includes an input stage and an output stage, powering a bipolar transistor of the output stage using a power amplifier supply voltage, changing a voltage level of the power amplifier supply voltage, the bipolar transistor having an input reactance that changes in response to the change in the voltage level of the power amplifier supply voltage, and compensating for a variation in a phase delay of the power amplifier arising from the change in the input reactance of the bipolar transistor using a compensation circuit that is electrically connected to an output of the input stage.

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