Title:
音響振動のせん断モードおよび縦モードの反射を増強した共振器構造体
Document Type and Number:
Japanese Patent JP6916176
Kind Code:
B2
Abstract:
A solidly mounted resonator structure includes an multi-layer acoustic reflector structure and a piezoelectric material layer arranged between the first and second electrode structures to form an active region, with the acoustic reflector structure providing enhanced reflection of shear and longitudinal modes of acoustic vibrations. The solidly mounted resonator structure is configured for transduction of an acoustic wave including a longitudinal component and a shear component. The acoustic reflector structure includes multiple sequentially arranged differential acoustic impedance layer units each including a low acoustic impedance material layer in contact with a high acoustic impedance material layer. A frequency corresponding to a minimum transmissivity of a second harmonic resonance of a longitudinal response is substantially matched to a frequency corresponding to a minimum transmissivity of a third harmonic resonance of a shear response.
Inventors:
Rick Morton
John Berthic
John Berthic
Application Number:
JP2018520475A
Publication Date:
August 11, 2021
Filing Date:
October 19, 2016
Export Citation:
Assignee:
Cobo Us, Inc.
International Classes:
H03H9/17
Domestic Patent References:
| JP2013528996A | ||||
| JP2004159339A | ||||
| JP2015073271A |
Foreign References:
| US20080247264 |
Attorney, Agent or Firm:
Atsushi Aoki
Shinji Mitsuhashi
Yoichi Watanabe
Masaru Nakajima
Ryotaro Takei
Junji Shibata
Shinji Mitsuhashi
Yoichi Watanabe
Masaru Nakajima
Ryotaro Takei
Junji Shibata