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. 29, 2003
Filed:
Nov. 02, 2001
Michio Kadota, Kyoto, JP;
Kenya Hashimoto, Funahashi, JP;
Murata Manufacturing Co., Ltd., Kyoto, JP;
Abstract
A surface acoustic wave apparatus that is an end surface reflection type surface acoustic wave apparatus includes at least one interdigital transducer provided on a main surface of a piezoelectric substrate, and end surfaces of the piezoelectric substrate are used as reflection end surfaces. The surface acoustic wave apparatus generates and utilizes a surface acoustic wave that has a longitudinal wave or a shear vertical wave as its main component. It is preferred that the shear horizontal wave component and the shear vertical wave component, other than the longitudinal wave component, each occupy no more than about 20% of the total energy strength of the entire excited surface acoustic wave. It is also preferred that the longitudinal wave component occupies about 70% or more of the total energy strength of the entire excited surface acoustic wave. By doing so it is possible to produce an end surface reflection type surface acoustic wave apparatus that can easily provide a desired bandwidth.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile