发明名称 |
Surface acoustic wave filter for suppressing surface to surface interference for a satellite communication receiver |
摘要 |
A filter for suppressing surface to surface interference for a satellite communication receiver which utilizes a surface acoustic wave (SAW) element. The SAW filter comprises two inter-digital transducers for input and one inter-digital transducer for output, all three transducers are constructed and arranged on a piezoelectric substrate. The widths of the adjacent portions of electrodes and the spaces between the electrodes of the input inter-digital transducers are adjusted based upon the principle of a transversal filter so that the frequency responses of the input interdigital transducers have a predetermined band width and a reduced gain of a frequency range where an interference signal exists respectively.
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申请公布号 |
US4954795(A) |
申请公布日期 |
1990.09.04 |
申请号 |
US19880234141 |
申请日期 |
1988.08.18 |
申请人 |
SAMSUNG ELECTRONICS CO., LTD. |
发明人 |
CHOI, YOUNG H. |
分类号 |
H03H15/00;H03H3/08;H03H9/64;H04B1/10;H04B3/04 |
主分类号 |
H03H15/00 |
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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