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:
Mar. 03, 2009
Filed:
Sep. 28, 2005
Masafumi Iwaki, Kawasaki, JP;
Tokihiro Nishihara, Kawasaki, JP;
Jun Tsutsumi, Kawasaki, JP;
Shinji Taniguchi, Kawasaki, JP;
Takeshi Sakashita, Kawasaki, JP;
Tsuyoshi Yokoyama, Kawasaki, JP;
Masanori Ueda, Yokohama, JP;
Tsutomu Miyashita, Yokohama, JP;
Masafumi Iwaki, Kawasaki, JP;
Tokihiro Nishihara, Kawasaki, JP;
Jun Tsutsumi, Kawasaki, JP;
Shinji Taniguchi, Kawasaki, JP;
Takeshi Sakashita, Kawasaki, JP;
Tsuyoshi Yokoyama, Kawasaki, JP;
Masanori Ueda, Yokohama, JP;
Tsutomu Miyashita, Yokohama, JP;
Fujitsu Media Devices Limited, Yokohama, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
A duplexer includes: first and second filters including film bulk acoustic resonators (FBARs) arranged in a ladder form; first and second integrated-passive devices (IPDs) provided between a common terminal and the first and second filters; and a substrate on which the first and second filters and the first and second IPDs are mounted. The substrate includes conductive patterns that realize inductances connected between the first and second filters and ground. The first and second IPDs includes inductors connected to the first and second filters.