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. 21, 2017
Filed:
Jun. 30, 2014
Applicant:
Qualcomm Incorporated, San Diego, CA (US);
Inventors:
Jingxue Lu, San Diego, CA (US);
Ankit Srivastava, San Diego, CA (US);
Matthew David Sienko, San Diego, CA (US);
Manu Mishra, San Diego, CA (US);
Sheng Zhang, San Jose, CA (US);
Assignee:
QUALCOMM Incorporated, San Diego, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03F 3/217 (2006.01); H03F 1/32 (2006.01); H03F 3/185 (2006.01); H03F 3/45 (2006.01);
U.S. Cl.
CPC ...
H03F 1/32 (2013.01); H03F 1/3205 (2013.01); H03F 3/185 (2013.01); H03F 3/2171 (2013.01); H03F 3/2173 (2013.01); H03F 3/45475 (2013.01); H03F 3/217 (2013.01); H03F 2200/03 (2013.01); H03F 2200/351 (2013.01); H03F 2203/45512 (2013.01); H03F 2203/45528 (2013.01);
Abstract
A switching amplifier includes a compensation circuit to compensate for DC offset in the amplifier, to enhance operation of the switching amplifier. The compensation circuit may comprise a SAR ADC, where the DAC element can be used to provide a compensation voltage. The switching amplifier may further include a PWM modulator configured to avoid cross-talk to further enhance operation of the switching amplifier.