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:
May. 09, 2017
Filed:
Jul. 05, 2016
Applicant:
Entropic Communications, Llc, Carlsbad, CA (US);
Inventors:
Ali Murat Ficici, Carlsbad, CA (US);
Chi-ping Nee, Carlsbad, CA (US);
Branislav Petrovic, Carlsbad, CA (US);
Assignee:
Entropic Communications, LLC, Carlsbad, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03B 1/00 (2006.01); H03K 5/00 (2006.01); H04B 1/10 (2006.01); H03K 5/1252 (2006.01);
U.S. Cl.
CPC ...
H03K 5/1252 (2013.01);
Abstract
Systems and methods for generating a spurious signal cancellation signal, the system comprising two direct digital synthesizers (DDS). The first DDS provides phase tracking to correct for rounding errors. The second DDS outputs a frequency that is exactly equal to N/M*CLK, where N and M are values selected to set the output frequency equal to the frequency of a spurious signal to be cancelled, and CLK is a clock frequency used to clock the first and second DDS circuits.