Influence of slot width on transmission properties of frequency selective surfaces
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摘要: 从物理本质上分析了频率选择表面FSS(Frequency Selective Surfaces)单元的缝隙宽度对FSS平板透波特性的影响.FSS平板单元的缝隙越宽,则单元的谐振波长缩短就越多,谐振频率也随之升高.利用Floquet定理,计算分析了缝隙宽度对FSS平板透波特性的影响;采用蚀刻技术加工FSS平板小矩形缝隙单元.实验测试的结果表明,缝隙宽度变大时,谐振频率升高,同时,FSS平板的透波率和谐振带宽变大.实验数据与计算结果在误差允许的范围内基本一致.Abstract: Influence of slot width on transmission properties of plannar FSS(frequency selective surfaces) was explained by physical essence. With the width of element slot in FSS increasing, it could shorten resonant wavelength of the element. Correspondingly it could increase the resonant frequency of the element. Influence of slot width on transmission properties of plannar FSS was calculated with Floquet theorem, and the small rectangle element was machined successfully by etching technique. Effects of the slot width on the transmission properties of FSS waspreliminarily explored by experiment. The experimental results show that the resonant frequency of FSS increases with the slot width, and the transmission ratio and resonant bandwidth is becoming greater. The experimental data accord with the computed results within error permissibility.
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Key words:
- slot width /
- frequency selective surfaces(FSS) /
- Floquet theorem
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