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:
Oct. 02, 2007
Filed:
Apr. 26, 2005
Yasuhide Iwamoto, Kawasaki, JP;
Shogo Inoue, Kawasaki, JP;
Jun Tsutsumi, Kawasaki, JP;
Masanori Ueda, Yokohama, JP;
Yasuhide Iwamoto, Kawasaki, JP;
Shogo Inoue, Kawasaki, JP;
Jun Tsutsumi, Kawasaki, JP;
Masanori Ueda, Yokohama, JP;
Fujitsu Media Devices Limited, Yokohama, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
An antenna duplexer includes two surface acoustic wave filters having different center frequencies and a phase matching circuit that matches phases of the two surface acoustic wave filters. A matching line pattern is provided on at least two layers between the two surface acoustic wave filters and transmission and reception terminals, and within an area specified by a sheet-like ground in a multilayered package, the multilayered package comprising multiple layers including a bonding layer on which wire bonding pads are provided for connecting to the two surface acoustic wave filters, and the matching line pattern having no portion provided on bonding layer.