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.

Date of Patent:
Dec. 25, 2012

Filed:

Feb. 05, 2010
Applicants:

Tzong-lin Wu, Taipei, TW;

Chung-hao Tsai, Taipei, TW;

Inventors:

Tzong-Lin Wu, Taipei, TW;

Chung-Hao Tsai, Taipei, TW;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01P 3/08 (2006.01); H04B 3/32 (2006.01);
U.S. Cl.
CPC ...
Abstract

A filtering device is capable of suppressing common mode noises upon transmission of a differential signal, and includes a differential transmission line, a grounding layer, a dielectric unit and a conductive structure. The differential transmission line has a pair of conductive traces spaced apart from each other. The grounding layer is spaced apart from the differential transmission line. The dielectric unit is disposed between the differential transmission line and the grounding layer. The conductive structure is embedded in the dielectric unit, is coupled electrically to the conductive traces and the grounding layer, and cooperates with the differential transmission line, the grounding layer and the dielectric unit to form a stacked structure that has an effective negative permittivity, thereby suppressing the common mode noises coupled to the conductive traces. A differential signal transmission circuit is also disclosed.


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Wu, Tzong-Lin. (2012). Filtering device and differential signal transmission circuit capable of suppressing common-mode noises upon transmission of a differential signal (U.S. Patent No. 8339212). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/8339212

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