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:
Oct. 11, 2011
Filed:
Oct. 10, 2006
Taras Kushta, Tokyo, JP;
Kaoru Narita, Tokyo, JP;
Taras Kushta, Tokyo, JP;
Kaoru Narita, Tokyo, JP;
NEC Corporation, Tokyo, JP;
Abstract
Provided are vertical transitions which have the high electrical performance and the high shielding properties in the wide frequency band in a multilayer PCB, printed circuit boards with the vertical transitions and semiconductor packages with the printed circuit boards and semiconductor chips. In vertical transitions for a multilayer PCB, a wave guiding channel is a conductor which includes at least more than one of signal vias, an assembly of ground viassurrounding the signal via, ground plates from conductor layers of the PCB connected to the ground vias, closed ground striplinesconnecting the ground vias and power supply layer.