Invention Grant
- Patent Title: Surface acoustic wave device and branching filter
- Patent Title (中): 表面声波装置和分支滤波器
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Application No.: US10800649Application Date: 2004-03-16
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Publication No.: US07112912B2Publication Date: 2006-09-26
- Inventor: Kenji Inoue , Seisuke Mochizuka
- Applicant: Kenji Inoue , Seisuke Mochizuka
- Applicant Address: JP Tokyo
- Assignee: TDK Corporation
- Current Assignee: TDK Corporation
- Current Assignee Address: JP Tokyo
- Agency: Oblon, Spivak, McClelland, Maier & Neustadt, P.C.
- Main IPC: H01L41/08
- IPC: H01L41/08

Abstract:
A surface acoustic wave device is provided with an input signal electrode 15 and an output signal electrode 16 to and from which an electric signal is inputted or outputted; a first surface acoustic wave resonator 18 including an input terminal 18a connected to the input signal electrode 15 and having a plurality of comb electrodes, an output terminal 18b connected to the output signal electrode 16 and having a plurality of comb electrodes, a common terminal 18c which has a plurality of comb electrodes and which forms interdigital transducers A and B together with the comb electrodes of the input terminal 18a and the comb electrodes of the output terminal 18b; and a second surface acoustic wave resonator 19 connected between the common terminal 18c of the first surface acoustic wave resonator 18 and a pair of grounding terminals 17.
Public/Granted literature
- US20050206272A1 Surface acoustic wave device and branching filter Public/Granted day:2005-09-22
Information query
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