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:
Jun. 07, 2016
Filed:
Dec. 09, 2013
Applicant:
Broadcom Corporation, Irvine, CA (US);
Inventors:
Debopriyo Chowdhury, San Diego, CA (US);
Ali Afsahi, San Diego, CA (US);
Assignee:
Broadcom Corporation, Irvine, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04K 1/02 (2006.01); H04L 25/03 (2006.01); H04L 25/49 (2006.01); H03F 1/02 (2006.01); H03F 1/22 (2006.01); H03F 1/32 (2006.01); H03F 3/195 (2006.01); H03F 3/24 (2006.01); H03F 3/45 (2006.01);
U.S. Cl.
CPC ...
H03F 1/0227 (2013.01); H03F 1/223 (2013.01); H03F 1/3223 (2013.01); H03F 3/195 (2013.01); H03F 3/24 (2013.01); H03F 3/45179 (2013.01); H03F 2200/336 (2013.01); H03F 2203/45394 (2013.01);
Abstract
A communication device, such as a smart phone, includes an envelope tracking power supply modulator. The envelope tracking power supply modulator receives an envelope tracking reference signal. A baseband controller pre-distorts the envelope tracking reference signal responsive to distortion caused by the envelope tracking power supply modulator. For instance, the pre-distortion may modify the nominal envelope tracking reference signal so that, after the modulator acts on the modified reference signal, the output of the modulator has increased linearity.