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把运用于处理各向同性媒质的基于Z变换形式的时域有限差分(ZT-FDTD)方法进行拓展,用它处理了各向异性磁化等离子体的电磁问题,给出了该方法用于各向异性磁化等离子体的递推计算公式,计算了各向异性磁化等离子体层对电磁波的反射系数和透射系数,计算结果与解析解及分段线性递归卷积FDTD(PLRC-FDTD)方法结果比较,吻合很好,从而验证了该方法用于各向异性磁化等离子体的高效性和高精度。最后,用此方法计算了各向异性磁化等离子体圆柱的后向散射宽度。该文研究结果可应用于等离子体天线等领域。
The ZT-FDTD (Time-Domain Finite Difference) method applied to the processing of isotropic media is extended to deal with the electromagnetic problems of anisotropic magnetized plasmas. It is given that this method can be used in all directions The recursive calculation formula of the anisotropic magnetized plasma is used to calculate the reflection coefficient and the transmission coefficient of the anisotropic magnetized plasma layer to the electromagnetic wave. Comparing the result of the calculation and the analytic solution and the result of piecewise linear recursive convolution FDTD (PLRC-FDTD) The agreement is good, which verifies the efficiency and accuracy of this method for anisotropic magnetized plasma. Finally, the backscattering width of anisotropic magnetized plasma cylinder is calculated by this method. The results of this paper can be applied to the plasma antenna and other fields.