摘要
采用分段线性电流密度递归卷积(P iecew ise L inear C u rren t D en sity R ecu rsive C onvo lu tion)方法将交替方向隐式时域有限差分方法(AD I-FDTD)推广应用于色散介质—等离子体中,得到了二维情况下等离子体中的迭代差分公式,为了验证该方法的有效性和可靠性,计算了等离子体涂敷导体圆柱的RC S和非均匀等离子体平板的反射系数,数据仿真结果表明,此算法与传统的FDTD相比,在计算结果吻合的情况下,存储量相当,计算效率更高,时间步长仅仅由计算精度来决定.
The unconditionally stable altemating-direction-implicit-finite-difference-time-domain （ADI-FDTD） method is extended to dispersive medi^isotropic plasma based on the PLCDRC（ Piecewise Linear Current Density Recursive Convolution） method. Two-dimensional ADI-FDTD formulations for isotropic plasma are derived. The proposed method is applicable to arbitrary dispersive media. Finally, in order to demonstrate the effectiveness of this approach, two examples are calculated, the numerical results of ADI-FDTD for isotropic plasma are in good agreement with the results obtained by conventional FDTD method,but compared with conventional FDTD method, the proposed method is efficient without requiring additional memory.
出处
《电子学报》
EI
CAS
CSCD
北大核心
2006年第3期483-486,共4页
Acta Electronica Sinica
基金
国家863高技术研究发展计划(No.2003AA134030)
