各向异性磁化等离子体的ZT-FDTD算法  

ZT-FDTD Method of Anisotropic Magnetized Plasma

作　　者：夏新仁[1] 尹成友[1] 王光明[2] 

机构地区：[1]解放军电子工程学院,合肥230037 [2]空军工程大学、导弹学院,三原713800

出　　处：《微波学报》2009年第1期20-25,共6页Journal of Microwaves

基　　金：国家自然科学基金(60671057)

摘　　要：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。In this paper, the finite-difference time-domain （FDTD） method by means of Z transforms （ZT-FDTD） for isotropic media is extended, and the electromagnetic issues of anisotropic magnetized plasma are disposed by using ZT-FDTD. The recursion formulation of this method for anisotropie magnetized plasma is derived. The reflection and transmission coefficients of electromagnetic waves through an anisotropic magnetized plasma layer in one dimension are computed. The high accuracy and efficiency of this method for anisotropic magnetized plasma are confirmed by comparing the results of ZT-FDTD with those of analytic solution and the pieeewise linear reeursive convolution finite-different time-domain （ PLRC- FDTD）. Finally, back scattering section of anisotropic magnetized plasma column are calculated by using this method. The solution presented in this paper may be applied in plasma antenna and other related areas.

关 键 词：各向异性 磁化等离子体 时域有限差分法 Z变换 

分 类 号：TN011[电子电信—物理电子学]