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. 18, 2014
Filed:
Jan. 22, 2013
Applicant:
Applied Micro Circuits Corporation, Sunnyvale, CA (US);
Inventors:
Michael Hellmer, Carlsbad, CA (US);
Simon Pang, San Diego, CA (US);
Brian Abernethy, Escondido, CA (US);
Yehuda Azenkot, San Jose, CA (US);
Assignee:
Applied Micro Circuits Corporations, Sunnyvale, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03L 7/18 (2006.01); H03L 7/093 (2006.01);
U.S. Cl.
CPC ...
Abstract
Systems and methods for Phase-Locked Loop (PLL) based frequency synthesizer comprising a dynamic fraction divider in a feedback loop. The dynamic fraction divider employs a dynamic divide ratio that dynamically changes with the jitters and noise spurs contained in an input signal to the PLL, and generates a feedback signal used to adjust the PLL output frequency. The dynamic divide ratio may be determined by comparing the phases of the PLL output signal and the input signal.