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1.发明公开Elastic surface wave convolva having wave width converting means and communication system using same 失效具有波形宽度转换装置的弹性表面波波导和使用相同的通信系统
公开(公告)号：EP0458271A3
公开(公告)日：1992-07-01
申请号：EP91108198.2
申请日：1991-05-21
IPC分类号： G06G7/195
CPC分类号： G06G7/195
摘要： An elastic surface wave convolver comprises a piezoelectric substrate, a plurality of input transducers formed on said substrate for generating elastic surface waves corresponding to respective input signals, a plurality of waveguides provided side by side on a region of the substrate where elastic surface waves radiated from the input transducers overlap, wherein a convolution signal of input signals is produced due to parametric mixing effect of elastic surface waves in respective waveguides, these waveguides generating an elastic surface wave corresponding to the convolution signal, and an output transducer for receiving the elastic surface wave radiated from the waveguides and taking out an electrical signal by conversion of the convolution signal, wherein the width of elastic surface wave radiated from the waveguides is narrower immediately before reception with the output transducer than immediately after radiation from the waveguides.
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2.发明公开Elastic surface wave convolva having wave width converting means and communication system using same 失效弹性表面波与波宽度转换器和传输系统及其使用折叠装置。
公开(公告)号：EP0458271A2
公开(公告)日：1991-11-27
申请号：EP91108198.2
申请日：1991-05-21
IPC分类号： G06G7/195
CPC分类号： G06G7/195
摘要： An elastic surface wave convolver comprises a piezoelectric substrate, a plurality of input transducers formed on said substrate for generating elastic surface waves corresponding to respective input signals, a plurality of waveguides provided side by side on a region of the substrate where elastic surface waves radiated from the input transducers overlap, wherein a convolution signal of input signals is produced due to parametric mixing effect of elastic surface waves in respective waveguides, these waveguides generating an elastic surface wave corresponding to the convolution signal, and an output transducer for receiving the elastic surface wave radiated from the waveguides and taking out an electrical signal by conversion of the convolution signal, wherein the width of elastic surface wave radiated from the waveguides is narrower immediately before reception with the output transducer than immediately after radiation from the waveguides.
摘要翻译： 弹性表面波convolva包括压电基板，形成在所述基片，用于产生弹性表面波对应于respectivement输入信号输入换能器的复数，波导的多个侧面上，其中的弹性表面波从所辐射的基板的区域中设置侧 输入换能器的重叠，worin输入信号的卷积信号产生由于respectivement波导弹性表面波的参数混合效果，弹性表面波对应于卷积信号的论文波导产生，并输出换能器，用于接收所述弹性表面波 从波导辐射和由卷积信号的转换，worin弹性表面波的宽度从所述波导辐射窄立即用比从波导辐射后，立即输出换能器接收之前取出电信号的。
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公开(公告)号：EP0602660A3
公开(公告)日：1994-09-07
申请号：EP93120387.1
申请日：1993-12-17
发明人： Hachisu, Takahiro, CANON KABUSHIKI KAISHA , Torisawa, Akria, c/o CANON KABUSHIKI KAISHA , Mochizuki, Norihiro, c/o CANON KABUSHIKI KAISHA , Egara, Koichi, c/o CANON KABUSHIKI KAISHA , Eguchi, Tadashi, c/o CANON KABUSHIKI KAISHA , Koyama, Akihiro, c/o CANON KABUSHIKI KAISHA
CPC分类号： H03H9/02787 , G06G7/195 , H03H9/14547 , H03H9/14561 , H04B1/26
摘要： A surface acoustic wave device (1) includes a piezoelectric substrate, first and second input transducers (2) formed on the substrate and adapted for respectively generating surface acoustic waves corresponding to input signals, the first and second input transducers (2) each having a shape to focus the surface acoustic waves generated thereby, an output transducer (3) formed between the first and second input transducers (2) on the substrate and adapted for obtaining a convolution signal of the surface acoustic waves generated by the first and second input transducers (2), and conductive films (4,14,24), one formed between the first input transducer and the output transducer and another between the second input transducer and the output transducer on the substrate.
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4.发明公开Surface acoustic wave device and communication system using it 失效AkustischeOberflächenwellenanordnungund Kommunikationssystem mit dieser Anordnung。
公开(公告)号：EP0602660A2
公开(公告)日：1994-06-22
申请号：EP93120387.1
申请日：1993-12-17
发明人： Hachisu, Takahiro, CANON KABUSHIKI KAISHA , Torisawa, Akria, c/o CANON KABUSHIKI KAISHA , Mochizuki, Norihiro, c/o CANON KABUSHIKI KAISHA , Egara, Koichi, c/o CANON KABUSHIKI KAISHA , Eguchi, Tadashi, c/o CANON KABUSHIKI KAISHA , Koyama, Akihiro, c/o CANON KABUSHIKI KAISHA
CPC分类号： H03H9/02787 , G06G7/195 , H03H9/14547 , H03H9/14561 , H04B1/26
摘要： A surface acoustic wave device (1) includes a piezoelectric substrate, first and second input transducers (2) formed on the substrate and adapted for respectively generating surface acoustic waves corresponding to input signals, the first and second input transducers (2) each having a shape to focus the surface acoustic waves generated thereby, an output transducer (3) formed between the first and second input transducers (2) on the substrate and adapted for obtaining a convolution signal of the surface acoustic waves generated by the first and second input transducers (2), and conductive films (4,14,24), one formed between the first input transducer and the output transducer and another between the second input transducer and the output transducer on the substrate.
摘要翻译： 表面声波装置包括：压电基板，形成在基板上的第一和第二输入换能器，用于分别产生对应于输入信号的表面声波，第一和第二输入换能器各自具有聚焦由此产生的表面声波的形状 形成在基板上的第一和第二输入换能器之间并且适于获得由第一和第二输入换能器产生的表面声波的卷积信号的输出换能器和形成在第一输入换能器和输出端之间的导电膜 换能器，另一个位于第二输入换能器和基板上的输出换能器之间。 一种通信系统，包括用于发送根据信息调制的信号的发射机，用于接收从发射机发送的调制信号的电路，用于产生参考信号的电路，如上所述的声表面波装置，用于输出卷积信号 的调制信号和参考信号，以及解调电路，用于使用从表面声波装置输出的卷积信号来恢复信息。
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