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:
Jul. 02, 2019
Filed:
Jul. 25, 2018
Applicant:
Mediatek Inc., Hsin-Chu, TW;
Inventor:
Jen-Huan Tsai, Hsin-Chu, TW;
Assignee:
MEDIATEK INC., Hsin-Chu, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03M 1/12 (2006.01); H03M 3/00 (2006.01); H04L 25/49 (2006.01); H04B 14/06 (2006.01);
U.S. Cl.
CPC ...
H04L 25/4902 (2013.01); H03M 1/12 (2013.01); H03M 3/456 (2013.01); H03M 3/458 (2013.01); H03M 3/504 (2013.01); H04B 14/062 (2013.01);
Abstract
The invention provides a sigma-delta modulator (SDM) and associated system improving spectrum efficiency of wired interconnection. The SDM may comprise a main circuit for transferring an aggregated signal by a signal transfer function, and a noise shaping circuit for shaping noise away from a low-pass band by a modified noise transfer function. A frequency response of the modified noise transfer function may have a notch at a passband, and the passband may not overlap with the low-pass band.