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US 10,594,292 B2Granted
Surface acoustic wave device
AssigneeHuawei Technologies Co., Ltd.
InventorZhuohui Chen
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Abstract
The embodiments herein relate to surface acoustic wave (SAW) devices, such as filters and duplexers. The surface acoustic wave device includes piezoelectric layer and a high acoustic velocity layer coupled to the piezoelectric layer at a first surface of the high acoustic velocity layer. At least one transducer is provided within the high acoustic velocity layer and flush with or near the first surface. The at least one transducer is configured to propagate a surface acoustic wave having an operating wavelength along the piezoelectric layer.
Claims18
A surface acoustic wave device comprising:
- a piezoelectric layer;
- a high acoustic velocity layer coupled to the piezoelectric layer at a first surface of the high acoustic velocity layer;
- at least one transducer within the high acoustic velocity layer and flush with or near the first surface, the at least one transducer being configured to propagate a surface acoustic wave having an operating wavelength (λ) along the piezoelectric layer;
- and
- a base layer coupled to a second surface of the high acoustic velocity layer opposite to the first surface.
2 more elements
Dependencies are inferred from the claim text.