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.

Date of Patent:
Mar. 21, 2017

Filed:

Jun. 28, 2014
Applicant:

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

Inventors:

Andy Cheng Pang Wu, Camarillo, CA (US);

Yu-Jui Lin, Glendale, CA (US);

Peter Phu Tran, Corona, CA (US);

Assignee:

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

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03G 3/30 (2006.01); H03F 3/19 (2006.01); H03G 1/00 (2006.01); H03F 1/02 (2006.01); H03F 1/56 (2006.01); H03F 3/21 (2006.01); H03F 3/24 (2006.01); H03F 3/68 (2006.01);
U.S. Cl.
CPC ...
H03F 3/19 (2013.01); H03F 1/0261 (2013.01); H03F 1/56 (2013.01); H03F 3/211 (2013.01); H03F 3/245 (2013.01); H03F 3/68 (2013.01); H03G 1/0088 (2013.01); H03G 3/3042 (2013.01); H03F 2200/111 (2013.01); H03F 2200/121 (2013.01); H03F 2200/129 (2013.01); H03F 2200/144 (2013.01); H03F 2200/156 (2013.01); H03F 2200/18 (2013.01); H03F 2200/222 (2013.01); H03F 2200/27 (2013.01); H03F 2200/387 (2013.01); H03F 2200/411 (2013.01); H03F 2200/451 (2013.01);
Abstract

Switchable feedback circuit for radio-frequency (RF) power amplifiers. In some embodiments, an RF power amplifier (PA) circuit can include a transistor having a base, a collector, and an emitter. The transistor can be configured to amplify an RF signal. The RF PA circuit can further include a switchable feedback circuit implemented between the collector and the base. The switchable feedback circuit can be configured to provide a plurality of resistance values between the collector and the base. Such a PA circuit can be implemented in products such as a die, a module, and a wireless device.


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