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.:
Date of Patent:
Mar. 04, 2014
Filed:
Jun. 27, 2012
Applicants:
Debopriyo Chowdhury, San Diego, CA (US);
Ali Afsahi, San Diego, CA (US);
Inventors:
Debopriyo Chowdhury, San Diego, CA (US);
Ali Afsahi, San Diego, CA (US);
Assignee:
Broadcom Corporation, Irvine, CA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H03G 3/20 (2006.01); H03F 1/22 (2006.01);
U.S. Cl.
CPC ...
Abstract
A power amplifier includes generation, tracking and usage of an envelope of an input RF signal. To improve upon the efficiency of the power amplifier, various configurations include using the tracked envelope, for example, an OFDM signal, to improve the average efficiency. Suitable hardware/software in the form of circuitry, logic gates, and/or code functions to generate and track an envelope of an input RF signal and modulate one or more of the input supply voltage, cascode gate bias or parallel PA branches using the tracked envelope.