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. 07, 2009
Filed:
Mar. 07, 2006
Hideki Kamitsuna, Kanagawa, JP;
Hideki Kamitsuna, Kanagawa, JP;
Nippon Telephone and Telegraph Corporation, Tokyo, JP;
Abstract
Four SP4T switches (-) are grouped in twos to form two switch pairs. First conductive lines (--) are arranged in fours between the SP4T switches () constituting the switch pairs. Each of four second conductive lines (-) connects to a corresponding one of different conductive lines of the first conductive lines which connect to the respective switch pairs. The first and second conductive lines are arranged on a dielectric layer having a lower surface on which a ground conductor () is formed. The dielectric, layer has a two-layer structure. The first conductive lines are arranged on the first dielectric layer as a lower layer. The second conductive lines are arranged on the second dielectric layer as an upper layer. This arrangement makes it possible to attain a reduction in the size of a matrix switch and a reduction in loss and allow broadband operation.