摘要
在电弧风洞射流动态环境下 ,对 376天线罩材料平板模型的透波性能进行了实验研究 .材料在等离子体射流作用前后介电性能和化学结构变化的测量和实验研究表明 ,等离子体射流作用后 ,某些材料的物理特性和化学结构表现出了不同的变化 ,影响了电磁波在其中的传输 .同时实验结果还表明 ,SiO2 类材料在本文等离子体条件下透波性能基本不变 ,而树脂硅胶类材料则表现出显著的吸波现象 .
An experiment is done in the arc heater wind tunnel which measures the microwave transmission nature of the plate mode of 376 antenna cover as well as the changes of its dielectric nature and chemical construction under plasma effluxion. It was found that the structure of the surface of the materials is changed and the change has affected the microwave transmission characteristics of the materials. It can also be observed that the microwave transmission characteristics of the materials mainly made of SiO 2 is almost the same as before. But that of the materials including colophony is changed greatly. The result is useful for selecting antenna materials.
