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. 04, 2006
Filed:
Mar. 30, 2004
Norio Taniguchi, Shiga-ken, JP;
Yasunori Kishimoto, Shiga-ken, JP;
Mitsuyoshi Hira, Shiga-ken, JP;
Murata Manufacturing Co., Ltd., Kyoto, JP;
Abstract
A surface acoustic wave duplexer includes a transmission-side surface acoustic wave filter and a receiving-side surface acoustic wave filter which are connected to an antenna terminal, and the transmission-side surface acoustic wave filter and the receiving-side surface acoustic wave filter are mounted on a package material. The surface acoustic wave duplexer further includes a high-frequency wave element which is connected to the transmission-side surface acoustic wave filter and the receiving-side surface acoustic wave filter, and at the same time, has two trap attenuation poles at the higher frequency side than at least the transmission-side pass band and the receiving-side pass band.