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:
Feb. 09, 2010
Filed:
Nov. 13, 2006
Applicant:
Yonghua Cong, Aliso Viejo, CA (US);
Inventor:
Yonghua Cong, Aliso Viejo, CA (US);
Assignee:
Broadcom Corporation, Irvine, CA (US);
Primary Examiner:
Int. Cl.
CPC ...
H03L 7/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A circuit and method to reduce jitter and/or noise in a phase-locked loop (PLL). A voltage-controlled oscillator (VCO) control signal is tapped and filtered to create a low-noise, filtered VCO control signal. The filtered and unfiltered control signals are individually weighted and then combined to create a modified VCO control signal which reduces the jitter and/or the noise by reducing an effect of VCO gain on the jitter and/or the noise.