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把金属平板前非均匀等离子体层简化为分层均匀的平板模型 ,采用等效输入阻抗方法 ,计算大气或真空边界入射波的总功率反射系数 ,分析其影响因素 .计算结果表明 :电子数密度大小、等离子体层厚度、入射波频率和入射角是功率反射系数的主要影响因素 ,适当调整其中任何一个 ,都可以达到降低功率反射系数的效果 .在低频段 ,电子数密度的分布对功率反射系数几乎没有影响 ;在高频段 ,电子数密度的分布对功率反射系数有影响 .等离子体厚度、入射波频率、电子数密度分布对功率反射系数的影响几乎与波的极化方向无关 .
In this paper, the non-uniform plasma layer in the metal plate is simplified to a flat plate model with uniform layering, and the total power reflection coefficient of the incident wave at atmospheric or vacuum boundary is calculated by equivalent input impedance method. The calculation results show that the electron density The size, thickness of plasma layer, incident wave frequency and incident angle are the main influencing factors of power reflection coefficient. If any one of them is properly adjusted, the effect of reducing the power reflection coefficient can be achieved. In the low frequency band, the distribution of electron density affects the power reflection At high frequency, the distribution of electron density affects the power reflection coefficient.The influence of plasma thickness, incident wave frequency and electron density distribution on the power reflection coefficient is almost independent of the polarization direction of the wave.