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. 24, 2004
Filed:
Feb. 13, 2003
Industrial Technology Research Institute, Hsinchu, TW;
Abstract
An automatically adjusting gain/bandwidth loop filter suitable for a digital phase lock loop or a digital adaptive carrier recovery loop with variable loop gain/bandwidth for rapid acquisition and lower steady-state jitter is provided. The automatically adjusting gain/bandwidth loop filter comprises a variable gain/bandwidth loop filter, a tracking status detector and a gain/bandwidth control state machine. The tracking status detector observes the frequency error which is the output of the frequency tracking (integral) branch of the variable gain/bandwidth loop filter, then it outputs a tracking state of the carrier recovery loop. The loop gain/bandwidth is then adjusted by the gain/bandwidth control state machine in response of the tracking state to improve the pull-in time and steady-state carrier frequency jitter.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile