Invention Grant
US08476991B2 Elastic wave resonator, elastic wave filter, and antenna sharing device using the same
有权
弹性波谐振器,弹性波滤波器和使用其的天线共享装置
- Patent Title: Elastic wave resonator, elastic wave filter, and antenna sharing device using the same
- Patent Title (中): 弹性波谐振器,弹性波滤波器和使用其的天线共享装置
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Application No.: US12757475Application Date: 2010-04-09
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Publication No.: US08476991B2Publication Date: 2013-07-02
- Inventor: Rei Goto , Yosuke Hamaoka , Hiroyuki Nakamura , Tetsuya Tsurunari , Joji Fujiwara
- Applicant: Rei Goto , Yosuke Hamaoka , Hiroyuki Nakamura , Tetsuya Tsurunari , Joji Fujiwara
- Applicant Address: JP Osaka
- Assignee: Panasonic Corporation
- Current Assignee: Panasonic Corporation
- Current Assignee Address: JP Osaka
- Agency: Brinks Hofer Gilson & Lione
- Priority: JP2007-288351 20071106; JP2007-296523 20071115; JP2009-096831 20090413
- Main IPC: H03H9/54
- IPC: H03H9/54 ; H03H9/64

Abstract:
An acoustic wave resonance device includes: piezoelectric substrate (1), first acoustic wave resonator (100) provided on an upper surface of piezoelectric substrate (1) and including first interdigital transducer electrode (110), and second acoustic wave resonator (200) provided on piezoelectric substrate (1) and including second interdigital transducer electrode (210). First acoustic wave resonator (100) and second acoustic wave resonator (200) are connected to each other. An overlap width of a plurality of first comb-shaped electrodes (112) forming first acoustic wave resonator (100) is larger than an overlap width of a plurality of second comb-shaped electrodes (212) forming second acoustic wave resonator (200). With such a configuration, frequencies in which a transverse mode spurious response is generated can be distributed and loss can be reduced.
Public/Granted literature
- US20100194496A1 ELASTIC WAVE RESONATOR, ELASTIC WAVE FILTER, AND ANTENNA SHARING DEVICE USING THE SAME Public/Granted day:2010-08-05
Information query
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