负电磁阻材料在强电磁脉冲防护中的应用展望
Application of Negative Electro/magnetoresistance Materials in High
-power EMP Protection
摘要 介绍了电致电阻效应材料和磁致电阻效应材料等可变阻抗功能材料的最新研究进展,分析了其用于高功率电磁脉冲防护的工作原理,指出变阻抗功能材料用于电磁防护具有电磁能量低通的独特性能,对于低功率的安全电磁波可以高效透射,而对高功率的电磁脉冲则有效屏蔽。最后以变阻抗材料用于雷达天线罩为例展望了此类功能材料在电磁脉冲防护中的独特性能与巨大潜力。
关键词 电致电阻效应;磁致电阻效应;电磁脉冲;电磁防护;可变阻抗
Abstract The latest research development of two kinds of variable impedance materials
which are electroresistance material and magnetoresistance material,were introduced
The working principles of these materials were analyzed under high-power
electromagnetic pulse (EMP) condition, which pointed out that the variable impedance
materials had low-pass characteristics to electromagnetic energy. The distinctive
properties of transmission of low-power electromagnetic wave could shield high-power
EMP effectively. Finally,taking the variable-impedance radome as an example,the huge
potential for high-power EMP protection was illustrated.
Keywords electroresistance;magnetoresistance;electromagnetic pulse;electromagnetic
protection; variable impedance
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