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:
Dec. 19, 2000
Filed:
Dec. 09, 1998
Patrik Larsson, Matawan, NJ (US);
Lucent Technologies, Inc., Murray Hill, NJ (US);
Abstract
A phase locked loop (PLL) includes a programmable frequency multiplier section and a programmable divide-by-N network connected in a feedback loop between an output and an input of the frequency multiplier. The frequency multiplier section includes programmable circuitry which is programmed to vary as a function of N to render the bandwidth of the PLL independent of the divider ratio 'N'. The frequency multiplier includes a charge pump circuit, a filter circuit and a voltage controlled oscillator (VCO) circuit with the programmable circuitry being formed in one of these circuits to render the bandwidth of the PLL independent of the divider ratio, whereby the bandwidth is increased and the jitter at the PLL output is decreased.