瞬态电磁场对多孔洞目标耦合规律的数值研究
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摘要: 运用时域有限差分（FDTD）方法，用数值方法研究了瞬态电磁场对开有多个孔洞的长方体的耦合规律。分别分析了不同极化方向、不同入射方向及不同带宽的瞬态电磁场的耦合效应。入射波极化方向与孔洞的短边平行时耦合入腔体的能量最多；相同振幅、不同上升前沿和带宽的入射波以窄带、快前沿耦合入的能量为多；多孔洞腔体内场衰减很快。Abstract: The finite-difference time-domain method is used to research the rule of the transient electromagnetic field coupled to the cavity that has many apetures on it. The coupling effects of different bandwidth and different polarized direction are described in this paper. When the polarized direction of the incident wave are parallel to the short side of the apeture, the coupled energy will attain the maximum. If the bandwith and the risetime are shorter, then the energy coupled to the cavity are greater.
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Key words:
- finite-difference time-domain method /
- transient electromagnetic field /
- couple /
- hole
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