Non-uniform Surface Impedance Absorbing Boundary Condition for FDTD Method

被引：0

作者：

Mao, Yunlong ^{[1
]}

Elsherbeni, Atef Z. ^{[2
]}

Sili ^{[1
]}

Jiang, Tao ^{[1
]}

机构：

[1] Harbin Engn Univ, Dept Informat & Commun Engn, Harbin, Peoples R China

[2] Colorado Sch Mines, Dept Elect & Comp Engn, Golden, CO 80401 USA

来源：

2017 11TH EUROPEAN CONFERENCE ON ANTENNAS AND PROPAGATION (EUCAP) | 2017年

关键词：

CPML; FDTD; Non-uniform; SIABC; DISPERSION;

D O I：

暂无

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Recently, we reported a novel absorbing boundary condition (ABC), surface impedance absorbing boundary (SIABC). SIABC has a comparable absorbing performance compared to CPML, but requires a sufficient long distance between the boundary and the scatter. In this paper, we focus on this issue and introduce the non-uniform SIABC. Non-uniform SIABC archives a similar absorbing performance as the uniform SIABC at a same distance, while the number of the air buffer cells is much smaller. Therefore, it is possible for us to make it more efficient relative to uniform SIABC or CPML. An example of a patch antenna is discussed to explore the accuracy and efficiency of non-uniform SIABC. We also compare the memory usage for uniform SIABC, non-uniform SIABC, and 10-layers CPML. All the results indicate that non-uniform SIABC requires much less memory, needs much less time for simulations, which makes it a potential of being one of the most popular ABCs in FDTD method.

引用

页码：516 / 519

页数：4

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