| 发明名称 |
Hybrid type wide band electromagnetic wave absorber |
| 摘要 |
A hybrid-type wide band electromagnetic wave absorber having cone-shaped projections of a reduced may be produced by matching the impedance of the cone-shaped absorber members and the underlying plate type absorber. Such a hybrid-type wide band electromagnetic wave absorber is formed by arranging tapered cone-shaped members in a regular pattern on a sintered ferrite plate, which is disposed on a metal plate. The cone-shaped members are formed of a material selected from a ferrite and a ferrite composite and each have a normalized cross-sectional area at the base of 0<S0<1 and an exponent of cone shape of 0<n<10. Such a hybrid type electromagnetic wave absorber may be used, for example, for performing EMI/EMS testing in an anechoic chamber in the frequency range of 30 MHz to 1 GHz. In the case of applications such as antenna testing in the frequency range of 30 MHz to 30 GHz, the height of the cone-shaped members must be appropriately increased.
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| 申请公布号 |
US5617095(A) |
申请公布日期 |
1997.04.01 |
| 申请号 |
US19950543260 |
申请日期 |
1995.10.18 |
| 申请人 |
KOREA RESEARCH INSTITUTE OF STANDARDS & SCIENCE |
发明人 |
KIM, DONG-YOUNG;CHUNG, YEON-CHOON |
| 分类号 |
H01F1/00;H01Q17/00;H05K9/00;(IPC1-7):H01Q17/00 |
主分类号 |
H01F1/00 |
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