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:
Sep. 21, 2010
Filed:
Sep. 23, 2008
Zhuo Fu, San Diego, CA (US);
Vivek Sarda, Austin, TX (US);
Pio Balmelli, Austin, TX (US);
Silicon Laboratories Inc., Austin, TX (US);
Abstract
A fractional-N divider receives an input signal and supplies a divided signal divided in accordance with an integer divide control signal determined from a divide ratio. A phase interpolator is coupled to the fractional-N divider to adjust a phase of the divided signal according to a fractional portion of the divide ratio. The apparatus, responsive to a request for a frequency adjustment of the generated signal in a programmable number of steps, is configured to adjust the frequency of the generated signal from a beginning frequency to an ending frequency in the programmable number of steps by adjusting the supplied divide ratio at each step.