缝隙宽度对频率选择表面透波特性的影响  

Influence of slot width on transmission properties of frequency selective surfaces

作　　者：王焕青[1] 吕明云[1] 蒙志君[1] 武哲[1] 

机构地区：[1]北京航空航天大学航空科学与工程学院,北京100083

出　　处：《北京航空航天大学学报》2006年第12期1427-1430,共4页Journal of Beijing University of Aeronautics and Astronautics

基　　金：国家自然科学基金重大研究计划重点资助项目(90305026)

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.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 was preliminarily 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.

关 键 词：缝隙宽度 频率选择表面 FLOQUET定理 

分 类 号：TN015[电子电信—物理电子学]