Akustische Oberflächenwellenanordnung

Details

Veröffentlichungs-Nr.

EP4804561

Anmeldetag

24. Oktober 2024

Veröffentlichung

8. Mai 2025

Rechtsraum

EP

Abstract

A surface acoustic wave device (10) includes an ultrasonic wave source (11), a reflection section (12), and a surface wave generation section (13). The reflection section (12) has a reflection surface (20) at which ultrasonic waves generated from the ultrasonic wave source (11) are reflected to generate shear waves. The surface wave generation section (13) generates a surface acoustic wave at a target surface (30) in response to the shear waves generated at the reflection surface (20) being introduced to the target surface (30). The reflection surface (20) is curved such that the shear waves generated at the reflection surface (20) converge at a focal point. When a flat area at a proximal end portion of the target surface (30) in a propagation direction of the surface acoustic wave is defined as a proximal end surface (31), the reflection surface (20) and the proximal end surface (31) are arranged in such a positional relationship that an angle formed between a direction in which at least a portion of the shear waves generated at the reflection surface (20) travels and a traveling direction (TD1) in which the surface acoustic wave travels along the proximal end surface (31) falls within a range of 0° or greater and less than 90°.

Anmelder

Firmen

Niterra Co., Ltd.
The University of Tokyo

Land

🇯🇵 Japan