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1. 发明申请

WO1997025776A1 HIGH FREQUENCY SAW DEVICE 审中-公开
标题翻译：高频SAW器件
公开(公告)号：WO1997025776A1
公开(公告)日：1997-07-17
申请号：PCT/US1996017906
申请日：1996-12-20
申请人： SAWTEK, INC. , NAUMENKO, Natalya F. , ORLOV, Victor S.
发明人： SAWTEK, INC.
IPC分类号： H03H09/17
CPC分类号： H03H9/02606 , H03H9/0259
摘要： A langasite crystal substrate having a prescribed range of Euler angles for substrate and crystal orientation improves signal processing for a surface acoustic wave (SAW) device, and thus for radiotelephones, mobile communication systems, television systems, and the like. When a voltage is applied to an input interdigital transducer IDT (2), a surface acoustic wave is generated in a piezoelectric substrate of langasite (1). This wave propagates in a direction generally perpendicular to electrodes of the IDT (2). The langasite crystal cut and wave propagation directions are defined which reduce insertion loss due to SAW transduction, diffraction, and beam steering. Temperature stability is improved. A low power flow angle and reduced level of diffraction is also achieved.
摘要翻译：具有用于衬底和晶体取向的欧拉角的规定范围的硅藻土晶体衬底改善了表面声波（SAW）器件的信号处理，并因此改善了无线电话，移动通信系统，电视系统等的信号处理。当电压被施加到输入叉指式换能器IDT（2）时，在朗氏体（1）的压电基板中产生表面声波。该波在大致垂直于IDT（2）的电极的方向上传播。定义了镧系晶体切割和波传播方向，其减少了由SAW传导，衍射和光束转向引起的插入损耗。温度稳定性提高。还实现了低功率流动角度和降低的衍射水平。

2. 发明专利

RU2099857C1 SURFACE ACOUSTICAL WAVE RADIO-FREQUENCY DEVICE 未知
公开(公告)号：RU2099857C1
公开(公告)日：1997-12-20
申请号：RU96100012
申请日：1996-01-10
申请人： NAUMENKO NATALYA F , ORLOV VIKTOR S
发明人： NAUMENKO NATALYA F , ORLOV VIKTOR S
IPC分类号： H03H9/25 , H01L41/08 , H03H9/00 , H03H9/02 , H03H9/17
摘要： A langasite crystal substrate having a prescribed range of Euler angles for substrate and crystal orientation improves signal processing for a surface acoustic wave (SAW) device, and thus for radiotelephones, mobile communication systems, television systems, and the like. When a voltage is applied to an input interdigital transducer IDT (2), a surface acoustic wave is generated in a piezoelectric substrate of langasite (1). This wave propagates in a direction generally perpendicular to electrodes of the IDT (2). The langasite crystal cut and wave propagation directions are defined which reduce insertion loss due to SAW transduction, diffraction, and beam steering. Temperature stability is improved. A low power flow angle and reduced level of diffraction is also achieved.

3. 发明专利

SU1709497A1 FILTER BASED ON SURFACE ACOUSTIC WAVES 未知
公开(公告)号：SU1709497A1
公开(公告)日：1992-01-30
申请号：SU4677160
申请日：1989-04-11
申请人： ORLOV VIKTOR S , NAUMENKO NATALYA F , IVANOV PETR G , DANILOV ALEKSANDR L
发明人： ORLOV VIKTOR S , NAUMENKO NATALYA F , IVANOV PETR G , DANILOV ALEKSANDR L
IPC分类号： H03H9/64

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