| 发明名称 |
ACOUSTIC WAVE ELEMENTS, ANTENNA DUPLEXERS AND ELECTRONIC DEVICES |
| 摘要 |
An acoustic wave element comprising a lithium tantalate substrate having the Euler angles (φ, θ, ψ), a first component φ satisfying 10°≦φ≦50°; and an electrode disposed on the lithium tantalate substrate and configured to excite a main acoustic wave of wavelength λ, the electrode having a density ρM satisfying ρM≧ρTi where ρTi represents a density of titanium (Ti), and a thickness hM of the electrode satisfies 0.141×exp(0.075ρM)λ≦hM≦0.134λ Embodiments of the present disclosure minimize a thickness of the electrode and suppress a spurious Rayleigh wave signal. |
| 申请公布号 |
US2016268997(A1) |
申请公布日期 |
2016.09.15 |
| 申请号 |
US201615067304 |
申请日期 |
2016.03.11 |
| 申请人 |
SKYWORKS PANASONIC FILTER SOLUTIONS JAPAN CO., LTD |
发明人 |
Komatsu Tomoya;Shimizu Hidehito;Fujiwara Joji;Tsurunari Tetsuya;Nakamura Hiroyuki |
| 分类号 |
H03H9/25 |
主分类号 |
H03H9/25 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. An acoustic wave element comprising:
a lithium tantalate substrate having Euler angles (φ, θ, ψ), a first component φ satisfying 10°≦φ≦50°; and an electrode disposed on the lithium tantalate substrate and configured to excite a main acoustic wave of wavelength λ, the electrode having a density ρM satisfying ρM≧ρTi, where ρTi represents a density of titanium (Ti), and a thickness hM of the electrode satisfies 0.141×exp(−0.075ρM)λ≦hM≦0.134λ. |
| 地址 |
Kadoma-Shi JP |
