Title:
Surface acoustic wave filter device
Document Type and Number:
Japanese Patent JP6025815
Kind Code:
B2
Abstract:
A surface acoustic wave filter device uses a Rayleigh wave as a main mode, and includes a ladder type surface acoustic wave filter unit. A thickness of a dielectric layer in a surface acoustic wave resonator configuring a series arm resonator is different from thickness of a dielectric layer in a surface acoustic wave resonator configuring a parallel arm resonator. A propagation orientation of a surface acoustic wave in the surface acoustic wave resonator configuring the series arm resonator is different from a propagation orientation of a surface acoustic wave in the surface acoustic wave resonator configuring the parallel arm resonator.
Inventors:
Daisuke Tamazaki
Kenichi Uesaka
Kenichi Uesaka
Application Number:
JP2014262191A
Publication Date:
November 16, 2016
Filing Date:
December 25, 2014
Export Citation:
Assignee:
MURATA MANUFACTURING CO.,LTD.
International Classes:
H03H9/64; H03H9/145; H03H9/25
Domestic Patent References:
| JP200879227A | ||||
| JP2009524955A | ||||
| JP2005214713A | ||||
| JP7283688A |
Attorney, Agent or Firm:
Patent business corporation Miya saki, table of contents patent office