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:
Apr. 23, 2013
Filed:
Jun. 30, 2008
Hiroyuki Tanaka, Kyoto, JP;
Takehiro Okumichi, Kyoto, JP;
Hiroyuki Tanaka, Kyoto, JP;
Takehiro Okumichi, Kyoto, JP;
Kyocera Corporation, Kyoto, JP;
Abstract
An SAW device includes: a piezoelectric substrate; a first and a second SAW elementshaving three or more odd-number IDT electrodes-and reflector electrodes-arranged on the piezoelectric substrate; lineswhich cascade-connect the first and the second SAW elements; a first unbalanced signal terminalconnected to the IDT electrodesarranged at the both ends of the first SAW elements; and a second unbalanced signal terminalconnected to the IDT electrodesarranged at the both ends of the second SAW element. In each of the first and the second SAW elements, one bus bar electrodeof each of center IDT electrodesis split into two, and non-split bus bar electrodesof at least one center IDT electrode of the first and the second SAW elementsare connected to a reference potential electrode and the linesare made to be balanced signal lines.