发明名称 |
Surface acoustic waver convolver |
摘要 |
A surface acoustic wave convolver of the present invention includes, on a surface of a piezoelectric substrate, a pair of comb-like surface acoustic wave excitation electrodes 2 and 3, and a center electrode 4. The excitation electrodes 2 and 3 are disposed opposed to each other at a specified interval while the center electrode 4 having a shorter width than a length of the excitation electrodes 2 and 3 is positioned between the electrodes 2 and 3. The center electrode 4 propagates the surface acoustic waves respectively produced by the excitation electrodes 2 and 3 in reverse directions to each other to obtain a convolution output signal. A pair of reflectors 10 are positioned on opposite sides of a region defined between the excitation electrode 2 and one end of the center electrode 4 with a width equivalent to that of the center electrode 4. Also, a pair of reflectors 11 are positioned on opposite sides of a region defined between the excitation electrode 3 and the other end of the center electrode 4 with a width equivalent to that of the center electrode 4.
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申请公布号 |
US5675207(A) |
申请公布日期 |
1997.10.07 |
申请号 |
US19960650257 |
申请日期 |
1996.05.22 |
申请人 |
SANYO ELECTRIC CO., LTD. |
发明人 |
HIRAO, YASUHIRO;MATSUI, KUNIYUKI;KOBAYASHI, YASUMI;TAKEUCHI, KOUSUKE;SHIBATA, KENICHI |
分类号 |
H03H9/145;G06G7/195;H03H9/72;H03H9/76;(IPC1-7):H03H9/72 |
主分类号 |
H03H9/145 |
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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