发明名称 |
Electromechanical device with acoustic waves comprising a transduction area and an area of free propagation being a resonant structure |
摘要 |
The device has a planar piezoelectric material structure (Mpiezo) comprising a free propagation zone (ZP) of acoustic waves generated at a transduction zone (ZT). Total length of the structure is equal to an integer of half of a wavelength that complies with equation comprising resonance frequency of resonator and average wave propagation speed to adjust a quality coefficient of resonator determined by the length and a coupling coefficient determined by a ratio of transduction length to the total length. The structure is delimited laterally by reflection zones and resonant cavities (F1, F2). |
申请公布号 |
EP2518898(A2) |
申请公布日期 |
2012.10.31 |
申请号 |
EP20120163863 |
申请日期 |
2012.04.12 |
申请人 |
COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIESALTERNATIVES |
发明人 |
REINHARDT, ALEXANDRE;DEFAY, EMMANUEL;PERRUCHOT, FRANCOIS |
分类号 |
H03H9/02;H03H3/02;H03H3/08;H03H9/05;H03H9/17;H03H9/25;H03H9/54;H03H9/64 |
主分类号 |
H03H9/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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