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:
Aug. 29, 2000
Filed:
Oct. 09, 1998
Applicant:
Inventor:
Yves Dufour, Sunnyvale, CA (US);
Assignee:
Philips Electronics North America Corporation, New York, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03L / ;
U.S. Cl.
CPC ...
331 17 ; 331 / ; 331 25 ; 327536 ; 327156 ; 327157 ;
Abstract
The switching time of a phase-locked loop (PLL) circuit can be reduced by increasing circuit bandwidth. A charge pump system is commonly used in the PLL circuitry to drive the voltage control oscillator (VCO). The increase in bandwidth intensifies the noise that is contributed by the charge pump system. To reduce charge pump noise, a chopper stabilizer circuit modulates the noise to a sufficiently high frequency so that a low-pass filter may filter out the modulated noise.
Dufour, Yves. (2000). Phase-locked loop circuit with charge pump noise cancellation (U.S. Patent No. 6111470). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6111470
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile