Surface-wave arrangement having a structure for preventing interfering
acoustic wave components
    1.
    发明授权
    Surface-wave arrangement having a structure for preventing interfering acoustic wave components 失效
    具有用于防止干扰声波分量的结构的表面波布置

    公开(公告)号:US5414321A

    公开(公告)日:1995-05-09

    申请号:US122497

    申请日:1993-09-28

    IPC分类号: H03H9/25 H03H9/02 H01L41/08

    CPC分类号: H03H9/02842

    摘要: Surface-wave arrangement (1) having at least one surface structure (21, 22), by means of which those components of surface waves (19) which are produced in the arrangement are rendered ineffective with respect to interference which would otherwise occur, for which a sump is provided in a known manner at the end of the substrate.

    摘要翻译: PCT No.PCT / EP92 / 00679 Sec。 371日期:1993年9月28日 102(e)日期1993年9月28日PCT提交1992年3月26日PCT公布。 公开号WO92 / 17937 日期为1992年10月15日。具有至少一个表面结构(21,22)的表面波形布置(1)通过该表面结构(21,22)在该布置中产生的表面波(19)的这些部件相对于 否则会发生干扰,在基底的端部以已知的方式提供储槽。

    Surface acoustic wave reflector filter having two non-resonant tracks
    3.
    发明授权
    Surface acoustic wave reflector filter having two non-resonant tracks 失效
    具有两个非谐振轨道的表面声波反射器滤波器

    公开(公告)号:US5379010A

    公开(公告)日:1995-01-03

    申请号:US861968

    申请日:1992-06-22

    IPC分类号: H03H9/145 H03H9/02 H03H9/64

    CPC分类号: H03H9/02874 H03H9/643

    摘要: A surface wave reflection filter includes an input transducer, an output transducer, and a reflector in a first propagation track. To compensate for undesired surface waves proceeding directly between the input and output transducers, as opposed to the desired surface waves which are reflected before reaching the output transducer, a second propagation track is provided. The second track includes a input transducer and an output transducer, and is either connected in phase opposition to compensate for the undesired signal, or is constructed to generate a signal in phase opposition. A sump may be provided in the second track, a second reflector may be provided in the first track or in the second track, and the two tracks may be on separate or the same substrates.

    摘要翻译: PCT No.PCT / EP90 / 02193 Sec。 371日期:1992年6月22日 102(e)日期1992年6月22日PCT 1990年12月14日PCT PCT。 出版物WO91 / 09465 日期:1991年6月27日。表面波反射滤波器包括第一传播轨道中的输入换能器,输出换能器和反射器。 为了补偿在输入和输出换能器之间直接进行的不期望的表面波,与在到达输出换能器之前被反射的期望的表面波相反,提供了第二传播轨道。 第二轨道包括输入换能器和输出换能器,并且以相位相互连接以补偿不需要的信号,或被构造为产生相位相反的信号。 可以在第二轨道中设置贮槽,第二反射器可以设置在第一轨道或第二轨道中,并且两个轨道可以在分开的或相同的基底上。