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:
Jan. 01, 2008
Filed:
Sep. 02, 2003
Applicants:
Hirokazu Tohya, Tokyo, JP;
Koichiro Masuda, Tokyo, JP;
Hideki Shimizu, Tokyo, JP;
Inventors:
Assignee:
NEC Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03H 7/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
Electromagnetic waves leaking from a power distribution circuit provided on a printed wiring substrate or in a semiconductor package are suppressed, and degradation of the waveform of a signal generated by a high-speed digital circuit. A strip line device comprises an elongated metal plate () having a valve action and coated with a dielectric film (). A conductive layer () is formed to cover the valve-acting metal, with the dielectric film () interposed therebetween. The characteristic impedance as seen from its input terminal can be low over a wide range.