发明名称 |
SCHUTZ FÜR EINEN ODER MEHRERE ELEKTROMAGNETISCHE SENSOREN |
摘要 |
A frequency-selective surface designed to transmit (allow to pass through) electromagnetic radiation around one or more predetermined transmission frequencies. The frequency-selective surface comprises at least two layers, whereby the outer layer is made up of at least one electromagnetic reflecting layer with a periodic pattern of conductive elements. The periodic pattern of conductive elements is made to have a reflection resonance frequency for electromagnetic radiation which is of the order of three times higher than the desired transmission frequency. The inner layer is placed at a suitable predetermined distance from the outer layer. The inner layer is made up of at least one electromagnetic transmitting layer having a periodic pattern of aperture elements. The periodic pattern of aperture elements is made in order to have a transmission resonance frequency for electromagnetic radiation which is substantially the same as the desired transmission frequency. |
申请公布号 |
DE69630508(D1) |
申请公布日期 |
2003.12.04 |
申请号 |
DE1996630508 |
申请日期 |
1996.07.15 |
申请人 |
TELEFONAKTIEBOLAGET L M ERICSSON (PUBL), STOCKHOLM |
发明人 |
STANEK, TOMAS;JOHANSSON, STEFAN |
分类号 |
H01Q15/12;H01Q1/28;H01Q1/42;H01Q15/00;(IPC1-7):H01Q1/42 |
主分类号 |
H01Q15/12 |
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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