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:
May. 26, 2009
Filed:
Feb. 07, 2007
Applicant:
Hwa-yeal Yu, Bucheon-Si, KR;
Inventor:
Hwa-Yeal Yu, Bucheon-Si, KR;
Assignee:
Samsung Electronics Co., Ltd., Suwon-si, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03M 1/20 (2006.01);
U.S. Cl.
CPC ...
Abstract
A sigma-delta modulator (SDM) includes a delay circuit and an operation circuit. The delay circuit generates multiple clock signals with different delays. The operation circuit includes a plurality of operation stages that operate with timing according to all of the clock signals for high-order sigma-delta modulation. Thus, noise may be dispersed for minimizing noise coupling. The SDM is used to particular advantage within a fractional-N phase-locked loop.