Numerical simulation and experimental verification of electromagnetic transmission characteristics of plasma sheath
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摘要: 采用Z变换时域有限差分(Z-FDTD)数值模拟方法,研究了电磁波在非均匀等离子体中的传输特性。在此基础上,对L波段(1.575 GHz)电磁波,在等离子峰值密度为1011/cm3且沿径向呈Bessel函数分布的柱形等离子体源下,进行了2,4,6,8,10 cm厚度下的传输特性实验,得到电磁波衰减分别为9,15.8,24.9,36.4,45.5 dB,并与仿真结果对比,吻合良好。
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关键词:
- 电磁波传播 /
- 黑障 /
- Z变换时域有限差分法 /
- 非均匀等离子体
Abstract: In order to study the transmission of electromagnetic waves in the non-uniform plasma sheath, the Z Finite-Difference Time-Domain(Z-FDTD) numerical method is combined with experiments. Electromagnetic waves transmission characteristics experiments are carried out under L-band(1.575 GHz) in plasma with thicknesses of 2,4,6,8,10 cm. The attenuations of electromagnetic wave are 9,15.8,24.9,36.4,45.5 dB. The results agree well with simulation results.
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