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:
Feb. 27, 2001
Filed:
Sep. 22, 1999
Masao Takeuchi, Machida, JP;
Mitsuhiro Tanaka, Aichi Pref., JP;
Other;
Abstract
A surface acoustic wave device including a substrate and an electrode structure formed on the substrate, said substrate being made of a doubly rotated Y-cut (&agr;X-&thgr;Y cut) Langasite (La,Ga,SiO,), a rotation angle &agr; from the X axis being substantially 50°±5° and a rotation angle &thgr; from the Y axis being substantially 19°-30°. The device further includes a normal type electrode structure which reveals a natural single-phase unidirectional transducer property together with an anisotropy of the substrate. The device further has a double electrode type electrode structure which cancels the directionality, or a floating type electrode structure which reverses the directionality. The electrode structure is formed to constitute a surface acoustic wave filter having a low insertion loss and an excellent phase property.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile