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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 10382147 B1

PDFFull Text
Date of Patent:
Aug. 13, 2019

Filed:

Dec. 13, 2016

Methods of calibrating a power amplifier system to compensate for envelope amplitude misalignment

Applicants:

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

Snaptrack, Inc., San Diego, CA (US);

Inventors:

David Steven Ripley, Marion, IA (US);

Sabah Khesbak, Irvine, CA (US);

Benjamin Bartram, Baldock, GB;

Kevin Lee Cobley, Lower Cambourne, GB;

Robert Astle Henshaw, Sudbury, GB;

Julian Hildersley, Hertsfordshire, GB;

Robert John Thompson, Cedar Rapids, IA (US);

Assignees:

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

SnapTrack, Inc., San Diego, CA (US);

Attorney:

Knobbe Martens Olson & Bear LLP

Primary Examiner:

Yuwen Pan

Assistant Examiner:

Fatuma G Sherif

Int. Cl.
CPC ...
H03F 1/02 (2006.01); H03F 1/30 (2006.01); H03F 1/32 (2006.01); H03F 1/56 (2006.01); H03F 3/19 (2006.01); H03F 3/21 (2006.01); H03F 3/24 (2006.01); H03F 3/68 (2006.01); H03F 3/72 (2006.01); H03G 3/30 (2006.01); H04B 1/40 (2015.01); H03F 3/193 (2006.01); H04B 17/13 (2015.01); H04W 88/02 (2009.01);
U.S. Cl.
CPC ...
H04B 17/13 (2015.01); H03F 1/025 (2013.01); H03F 1/0211 (2013.01); H03F 1/0216 (2013.01); H03F 1/0222 (2013.01); H03F 1/0227 (2013.01); H03F 1/30 (2013.01); H03F 1/301 (2013.01); H03F 1/32 (2013.01); H03F 1/56 (2013.01); H03F 3/19 (2013.01); H03F 3/193 (2013.01); H03F 3/21 (2013.01); H03F 3/211 (2013.01); H03F 3/245 (2013.01); H03F 3/68 (2013.01); H03F 3/72 (2013.01); H03G 3/30 (2013.01); H03G 3/3036 (2013.01); H03G 3/3042 (2013.01); H04B 1/40 (2013.01); H04W 88/02 (2013.01); H03F 2200/102 (2013.01); H03F 2200/108 (2013.01); H03F 2200/111 (2013.01); H03F 2200/15 (2013.01); H03F 2200/387 (2013.01); H03F 2200/405 (2013.01); H03F 2200/429 (2013.01); H03F 2200/451 (2013.01); H03F 2200/462 (2013.01); H03F 2200/465 (2013.01); H03F 2200/471 (2013.01); H03F 2200/507 (2013.01); H03F 2200/511 (2013.01); H03F 2203/21106 (2013.01);
Abstract

Methods of calibrating a power amplifier system to compensate for envelope amplitude misalignment are provided. In certain configurations, a method of calibrating a power amplifier system includes amplifying a radio frequency signal from a transceiver using a power amplifier and generating a supply voltage of the power amplifier using an envelope tracker, including generating a scaled envelope signal based on a power control level signal and an envelope signal, and shaping the scaled envelope signal using a shaping table generated at a target gain compression. The method further includes changing a scaling of the scaled envelope signal using a calibration module, monitoring an output of the power amplifier to determine an amount of scaling of the scaled envelope signal at which a detected gain compression of the power amplifier corresponds to the target gain compression of the shaping table, and calibrating the power amplifier system based on the determination.

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