发明名称 |
Surface acoustic wave device improved in convolution efficiency, receiver using it, communication system using it, and method for producing surface acoustic wave device improved in convolution efficiency |
摘要 |
A surface acoustic wave device includes a substrate having piezoelectricity, at least two input electrodes, provided on the substrate, for exciting first and second surface acoustic waves, and an output electrode for taking a convolution signal of the two surface acoustic waves out. The substrate has a roughness configuration on a back face thereof and a maximum depth of the roughness configuration is not less than a wavelength of bulk waves of convolution output taken out of the output electrode. <IMAGE> |
申请公布号 |
EP0704812(A3) |
申请公布日期 |
1996.10.02 |
申请号 |
EP19950115234 |
申请日期 |
1995.09.27 |
申请人 |
CANON KABUSHIKI KAISHA |
发明人 |
HACHISU, TAKAHIRO;MOCHIZUKI, NORIHIRO;EGARA, KOICHI;EGUCHI, TADASHI;KOYAMA, AKIHIRO;YOKOTA, AKANE |
分类号 |
H03H3/08;G06G7/195;H03H9/25;H03H9/72;H04B1/69;H04B1/707 |
主分类号 |
H03H3/08 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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