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:
Jan. 09, 2018

Filed:

May. 19, 2015
Applicant:

Stmicroelectronics (Shenzhen) R&d Co. Ltd, Shenzhen, CN;

Inventors:

Qi Yu Liu, Shenzhen, CN;

Hong Wu Lin, Shenzhen, CN;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03F 3/38 (2006.01); H03F 3/183 (2006.01); H03F 3/45 (2006.01); H03F 3/217 (2006.01);
U.S. Cl.
CPC ...
H03F 3/183 (2013.01); H03F 3/2173 (2013.01); H03F 3/45475 (2013.01); H03F 3/217 (2013.01); H03F 3/2171 (2013.01); H03F 2200/03 (2013.01); H03F 2203/45138 (2013.01);
Abstract

A class-D amplifier includes a signal processing block. The signal processing block generates a first processed signal representing a difference between a first differential signal and a second differential signal, when a duty cycle of the first differential signal is greater than that of the second differential signal. The signal processing block generates the first processed signal representing a reference DC level, when the duty cycle of the first differential signal is less than that of the second differential signal. A second processed signal representing a difference between the second differential signal and the first differential signal is generated when the duty cycle of the second differential signal is greater than that of the first differential signal, and the second processed signal representing the reference DC level is generated when the duty cycle of the second differential signal is less than that of the first differential signal.


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Liu, Qi. (2018). High efficiency class d amplifier with reduced generation of emi (U.S. Patent No. 9866187). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/9866187

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