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| 任意单元频率选择表面的有效分析方法 |
| Effective analytical method of frequency selective surface with arbitrary element |
| 修订日期：2003-11-30 |
| DOI： |
| 中文关键词: 频率选择表面,光子带隙,模匹配,有限元 |
| 英文关键词:frequency selective surface,photonic bandgap,mode matching,finite element |
| 基金项目: |
| 卢俊 孙连春 |
| 长春理工大学光学物理系，中国科学院长春光学精密机械与物理研究所 吉林长春130022中国科学院长春光学精密机械与物理研究所吉林长春130022，吉林长春130022 |
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| 中文摘要: |
| 频率选择表面是二维周期性阵列结构,通常由导体贴片和介质或由周期性开孔的导体屏和介质构成,与入射电磁波相互作用时表现出明显的带通或带阻的滤波特性,因而是一种光子带隙材料。采用模匹配技术对带通型频率选择表面进行分析,其中单元内的常用有限元法解出。这种方法的特点是对任意单元形状的频率选择表面都适用。给出了相应的公式推导并对红外频率选择表面进行了数值计算,将所得结果与文献进行了对比,获得了很好的一致性。 |
| 英文摘要: |
| Frequency selective surface is formed by two-dimension periodic array structure, which is always constructed by the conductive paste and dielectric or the periodic aperture conductive screen and dielectric. The filtering character of bandpass and bandstop is obviously shown when electric-magnetic wave react with the surface, so FSS is also a kind of photonic bandgap material. Bandpass FSS is analyzed by mode matching technology. With this technology, the field in the elements can be solved by finite element method. This method can be applied in analyzing arbitrary element, which is the good character of the method. The relevant functions are given in this paper and infrared frequency selective surface is also numerically calculated. The conclusion accords with the results in the reference perfectly. |
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