发明授权
US06788170B1 Resonator structure having a dampening material and a filter having such a resonator structure
有权
具有阻尼材料的谐振器结构和具有这种谐振器结构的滤波器
- 专利标题: Resonator structure having a dampening material and a filter having such a resonator structure
- 专利标题(中): 具有阻尼材料的谐振器结构和具有这种谐振器结构的滤波器
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申请号: US10031533申请日: 2002-04-16
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公开(公告)号: US06788170B1公开(公告)日: 2004-09-07
- 发明人: Jyrki A. Kaitila , Markku Ylilammi , Juha Ellä
- 申请人: Jyrki A. Kaitila , Markku Ylilammi , Juha Ellä
- 优先权: FI991619 19990719
- 主分类号: H03H954
- IPC分类号: H03H954
摘要:
Resonator structure (600, 800, 810, 820) comprises two conductor layers (110, 120) and a piezoelectric layer (100) in between the conductor layers, and said conductor layers and piezoelectric layer extend over a first area of the resonator structure, which first area is a piezoelectrically excitable area of the resonator structure. The resonator structure is characterized in that it is arranged to have a zone (603, 801, 803, 804), which confines a center area (604, 802) within the first area of the resonator, and the layer structure in the zone is arranged to be such that piezoelectrically excited vibrations are dampened more effectively in the zone than in the center area.
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