
第19卷
第10期
2011年10月文章编号
1004924X(2011)10-233309
光学精密工程
Optics and Precision Engineering
Vol. 19No, 10
Oet, 2011
利用电场与磁场耦合制备微型化频率选择表面
徐念喜1,2,高劲松,梁凤超,赵晶丽,冯晓国1.
(1.中国科学院长春光学精密机械与物理研究所中国科学院光学系统先进制造技术重点实验室,吉林长春130033;2.中国科学院研究生院,北京100039)
摘要:利用感性表面(金属栅格)与容性表面(间隔的金属环形贴片)之间的耦合机制制备了微型频率选择表面(MEF SS),依据传输线理论给出电感、电容近似公式,定性分析了MEFSS结构参数,采用全波分析矢量模匹配法计算了不同几何结构参数与耦合层电参数MEFSS的传输特性。通过镀膜与光刻法在500μm厚聚酰亚胺膜两侧以矩形排列方式制备了12个0.125>集总电感单元与集总电容单元,利用自由空间法测试了240mm×240mmMEFSS样件的传输特性。结果显示,测试样件中心频点为14.636GHz,透过率为一0.382dB,一3dB,带宽为2.17GHz时,单元尺寸为 0.125入;当单元尺寸变小时,中心频点向高频漂移,其透过率下降;固定单元尺寸,中心题点随固定电感宽度、电容间隔和环形贴片宽度的增加而向高频漂移;耦合层厚度增加0.4mm,中心频点向低频漂移1.4GHz,且透过率降低2.6dB;相对介电常数由3.5变为2.中心频点向高漂移2.8GHz。结论显示,利用感性与容性表面耦合机制能制备单元尺寸为 0.125>的FSS,其具有微型化、宽通带和对人射波角度不敏感的特点。
词:频率选择表面;耦合机制;感性表面;客性表面
关键
中图分类号:TN957;TN761
文献标识码:A
dol;10.3788/OPE,20111910.2333
Fabricationof miniaturizedfrequency selectivesurfaces utilizingcouplingbetweenelectricandmagneticfields
XU Nian-xi"-, GAO Jin-song',LIANG Feng-chao',ZHAO Jing-li', FENG Xiao-guo'
(1.KeyLaboratory of Optical System Aduanced ManufacturingTechnology,ChangchunInstituteof Optics,FineMechanics and Physics,ChineseAcademy of Sciences,Changchun130033,China;
2.GraduateUniversityof ChineseAcademy of Sciences,Beijing100039,China)
Correspondingauthor,E-mail:frg74163.com
Abstract: A Miniaturized-element Frequency Selective Surface (MEFSS) was fabricated based on the coupling mechanism between an inductive surface( metallic meshes)and a capacitive surface(wire pat ches). On the basis of the theory of the transmission line, the approximation formulas of the capaci-tance, the inductance were provided and the structural parameters of MEFSS were analyzed qualita tively. By using the vector modal matching method and the transmission characteristics of MEFSS with different geometry parameters and coupling layer electrical parameters were studied in this paper. Twelve lumped inductors and lumped capacitors were properly fabricated on the two side of a PI film
收稿日期:2010-12-17;修订日期:2010-12-31.
基金项目:中科院长春光学精密机械与物理研究所第三期创新工程资助项目(No.093Y32J090)