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:
Sep. 05, 2006
Filed:
Jul. 02, 2004
Kazuhiro Otsuka, Kyoto, JP;
Motoki Ito, Kyoto, JP;
Kiyohiro Iioka, Kyoto, JP;
Tsuyoshi Nakai, Kyoto, JP;
Kazuhiro Otsuka, Kyoto, JP;
Motoki Ito, Kyoto, JP;
Kiyohiro Iioka, Kyoto, JP;
Tsuyoshi Nakai, Kyoto, JP;
Kyocera Corporation, Kyoto, JP;
Abstract
IDT electrodes are arranged on a piezoelectric substrate along a propagation direction of a surface acoustic wave whereas reflectors are each interposed between a respective pair of IDT electrodes, the reflectors each including four or more electrode fingers extended perpendicularly to the propagation direction. An electrode-finger pitch 'a' of the reflector is progressively decreased from the opposite ends of the reflector toward the center thereof. Frequencies allowed to pass through a pass band may be controlled by varying the electrode-finger pitch. Thus is provided a surface acoustic wave device featuring a wide-band transmission performance.