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PIER PIER B PIER C PIER M PIER Letters
2013-09-06
A Dispersive Conformal FDTD Technique for Accurate Modeling Electromagnetic Scattering of THz Waves by Inhomogeneous Plasma Cylinder Array
By
Xia Ai,

    Dr. Xia Ai

    School of Science

    Xidian University

    China

    Homepage

Yuan Tian,

    Dr. Yuan Tian

    School of Science

    Xidian University

    China

    Homepage

Zhiwei Cui,

    Dr. Zhiwei Cui

    School of Science

    Xidian University

    China

    Homepage

Yiping Han,

    Professor Yiping Han

    School of Science

    Xi'dian University

    China

    Homepage

Xiao-Wei Shi

    Professor Xiao-Wei Shi

    School of Electronics Engineering

    Xidian University

    China

    Homepage

Progress In Electromagnetics Research, Vol. 142, 353-368, 2013
doi:10.2528/PIER13052409
Abstract
A dispersive conformal FDTD method has been proposed to accurately model the interface between two adjacent dispersive mediums and implemented to study the scattering of THz electromagnetic (EM) waves by inhomogeneous collisional plasma cylinder array. The method is based on the technology of area average, which is different from existing dispersive conformal FDTD schemes. Numerical results show that the proposed method enhance the accuracy level compared to the staircasing FDTD scheme involved in the inhomogeneous plasma. It is interesting to find that the THz EM waves can propagate through the plasma array more easily with higher frequencies or larger separations, hence the scattering width in the backward direction becomes smaller, and the forward scattering exhibits a little difference. This study will be useful for further designing intelligent plasma antenna arrays in THz band and terahertz reentry telemetry through plasma.
Citation
Xia Ai, Yuan Tian, Zhiwei Cui, Yiping Han, and Xiao-Wei Shi, "A Dispersive Conformal FDTD Technique for Accurate Modeling Electromagnetic Scattering of THz Waves by Inhomogeneous Plasma Cylinder Array," Progress In Electromagnetics Research, Vol. 142, 353-368, 2013.
doi:10.2528/PIER13052409
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