Title:
ELASTIC WAVE FILTER DEVICE
Document Type and Number:
WIPO Patent Application WO/2017/068838
Kind Code:
A1
Abstract:
Provided is a bandpass-type elastic wave filter device which uses Rayleigh waves, and which is not readily affected by an SH-wave response. In this bandpass-type elastic wave filter device 1, an IDT electrode 3 and a dielectric layer 6 are provided on a piezoelectric substrate 2 including a LiNbO3 layer, and an elastic wave resonator is formed by the IDT electrode 3. The elastic wave resonator uses Rayleigh waves. An SH-wave response excited by the elastic wave resonator is located outside the passband of the elastic wave filter device 1.
Inventors:
MIMURA MASAKAZU (JP)
Application Number:
PCT/JP2016/073418
Publication Date:
April 27, 2017
Filing Date:
August 09, 2016
Export Citation:
Assignee:
MURATA MANUFACTURING CO (JP)
International Classes:
H03H9/64; H03H9/145; H03H9/25
Domestic Patent References:
| WO2012090698A1 | 2012-07-05 | |||
| WO2007125734A1 | 2007-11-08 |
Foreign References:
| JP2014192676A | 2014-10-06 | |||
| JP2010109694A | 2010-05-13 |
Attorney, Agent or Firm:
MIYAZAKI & METSUGI (JP)
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