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. 20, 2011
Filed:
Aug. 21, 2008
William Frederick Ellersick, Sudbury, MA (US);
William Frederick Ellersick, Sudbury, MA (US);
QUALCOMM Incorporated, San Diego, CA (US);
Abstract
In accordance with the present disclosure, a multi-modulus divider (MMD) circuit configured for operation at high frequencies may include a cascade of multiple divide-by-2-or-3 cells that divides an input clock signal to produce a pulse signal. The MMD circuit may also include a pulse stretching circuit that extends the duration of the pulse signal, thereby outputting an output clock signal. The cascade of divide-by-2-or-3 cells and the pulse stretching circuit may be implemented using full-swing complementary metal-oxide-semiconductor (CMOS) circuits. Each divide-by-2-or-3 cell may be organized so that a critical path of the divide-by-2-or-3 cell comprises a first dynamic flip flop, a second dynamic flip flop, and no more than two logic stages between the first dynamic flip flop and the second dynamic flip flop.