专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US06992547B2 Surface acoustic wave arrangement for broadband signal transmission 有权
标题翻译：用于宽带信号传输的表面声波布置
公开(公告)号：US06992547B2
公开(公告)日：2006-01-31
申请号：US10812163
申请日：2004-03-29
申请人： Andreas Bergmann
发明人： Andreas Bergmann
IPC分类号： H03N9/64
CPC分类号： H03H9/14532 , H03H9/02685 , H03H9/02716 , H03H9/02795 , H03H9/14505 , H03H9/14514 , H03H9/14526 , H03H9/14547 , H03H9/14552 , H03H9/14558 , H03H9/14564 , H03H9/14567 , H03H9/1457 , H03H9/14594
摘要： A surface acoustic wave arrangement has at least two interdigital transducers being provided on a piezoelectric substrate along an acoustic path, with at least one of the interdigital transducers being a fan transducer which is divided in a transverse direction into edge tracks and a center track. The acoustic wave excited in the edge tracks can be radiated either bidirectionally or unidirectionally in a predominant direction. On the other hand, the center track is formed so that the unidirectional radiation of the wave takes place in a direction opposite the predominant direction. In this manner, the signal transmission is suppressed in the frequency range corresponding to the finger period in the center track within the passband range of the transfer function. The obtained notch in the transfer function is used, for example, in receivers of terrestrial and satellite-based signals for suppressing the terrestrial signals in the satellite path of the receiver.
摘要翻译：表面声波布置具有至少两个叉指换能器，沿着声学路径设置在压电基片上，其中至少一个叉指式换能器是沿横向分成边缘轨道和中心轨道的风扇换能器。在边缘轨道中激发的声波可以在主要方向上双向或单向辐射。另一方面，形成中心轨道使得波的单向辐射沿与主要方向相反的方向发生。以这种方式，在与传送函数的通带范围内的中心轨道中的手指周期相对应的频率范围内抑制信号传输。传递函数中获得的陷波例如用于地面和卫星信号的接收机中，用于抑制接收机卫星路径中的地面信号。

IPRDB

热门服务

关于我们

友情链接

联系方式