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. 26, 2013
Filed:
Mar. 27, 2012
Anthony Louis Caviglia, Marriottsville, MD (US);
Eric Harris Naviasky, Ellicott City, MD (US);
Anthony Louis Caviglia, Marriottsville, MD (US);
Eric Harris Naviasky, Ellicott City, MD (US);
Cadence Design Systems, Inc., San Jose, CA (US);
Abstract
The present disclosure relates to a method, apparatus, and system for locking a phase locked loop (PLL). The method may include receiving a reference signal at a phase locked loop (PLL) circuitry having a first PLL circuitry and a second PLL circuitry. The first PLL circuitry may include a fixed frequency oscillator. The method may further include adjusting a division ratio using, at least in part, a fractional divider circuitry in communication with the fixed frequency oscillator, to generate a feedback signal having a substantially equal frequency and a substantially equal phase in relation to a reference frequency. The method may also include receiving the feedback signal and the reference frequency at a phase detector.