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厚屏频率选择表面能较好地改善FSS带宽性能,是实现隐身雷达天线罩的有效手段.为了全面掌握厚屏FSS的传输特性,给FSS的工程应用提供可靠依据,本文设计了一种介质-金属加载圆孔单元的厚屏频率选择表面.采用矩量法对此结构进行分析计算,主要研究了加载金属直径、加载介质厚度、电磁波入射角等几个参数对厚屏FSS传输特性的影响规律.仿真实验结果表明:带宽、中心频率及其透过率都对填充介质直径、加载金属直径、加载介质厚度、电磁波入射角和不同排列方式有不同程度的敏感性,可以通过合理调整加载金属直径及加载介质厚度来获得较宽的通带和较高的透过率.这为实现厚屏FSS在曲面隐身雷达天线罩上的应用提供了一种有价值的借鉴.Thick screen frequency selective surface (FSS) is a very effective means of realizing the stealth radome, since it can better improve the bandwidth performance of FSS. In order to fully grasp the transmission characteristics of thick screen FSS and to provide a sound foundation of realizing their applications for bandpass radomes, a dielectric-metal-loaded thick-screen FSS is designed in this paper. The transmission properties of this structure are analyzed by using the moment method. The transmission characteristics of this structure are investigated when some parameters including the diameter of filling dielectric, the diameter of filling metal, the thickness of filling dielectric, incidence angle of electromagnetic wave, and unit spacing are changed. Simulation results show that the diameter of filling dielectric, the diameter of filling metal, the thickness of loading dielectric, thickness of filling metal, incidence angle of electromagnetic wave, and unit spacing can influence the transmission properties of the dielectric-metal-loaded thick-screen FSS. The diameter of filling metal and the thickness of loading dielectric can be adjusted appropriately in order to obtain a wide passband width and a better penetrating percentage of the central frequency. The novel structure provides a valuable reference for the application in stealth curved streamlined radomes.
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Keywords:
- thick-screen frequency selective surfaces /
- dielectric-metal-loaded /
- moment method /
- transmission property
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[39] -
[1] Munk B A 2000 Frequency Selective Surfaces Theory and Design (New York: Wiley) p28
[2] Wu Z, Wu Z B 2005 Acta Elec. Sin. 33 517 (in Chinese) [武哲, 武振波 2005 电子学报 33 517]
[3] [4] [5] Chen L, Dong J M 2006 Space Electronic Technology 4 57 (in Chinese) [陈磊, 董金明 2006 空间电子技术 4 57]
[6] Wang H Q, Lu M Y, Wu Z 2005 Journal of Infrared and Millimeter Waves 24 27 (in Chinese) [王焕青, 吕明云, 武哲 2005 红外与毫米波学报 24 27]
[7] [8] Lu J, Sun L C 2004 Journal of Changchun University of Science and Technology 27 80 (in Chinese) [卢俊, 孙连春 2004 长春理工大学学报 27 80]
[9] [10] [11] Lu J, Zhang J, Sun L C 2005 Optics and Precision Engineering 13 219 (in Chinese) [卢俊, 张靓, 孙连春 2005 光学精密工程 13 219]
[12] [13] Li X Q, Gao J S 2006 Optics and Precision Engineering 14 1071 (in Chinese) [李小秋, 高劲松 2006 光学精密工程 14 1071]
[14] Li X Q, Gao J S, Zhao J L, Sun L C 2008 Acta Phys. Sin. 57 3803 (in Chinese) [李小秋, 高劲松, 赵晶丽, 孙连春 2008 57 3803]
[15] [16] Li X Q, Lu J, Jia H Y, Gao J S, Feng X G, Sun L C 2007 Journal of Infrared and Millimeter Waves 26 146 (in Chinese) [李小秋, 卢俊, 贾宏燕, 高劲松, 冯晓国, 孙连春 2007 红外与毫米波学报 26 146]
[17] [18] [19] Li X Q, Gao J S, Feng X G 2008 Journal of Microwaves 24 7 (in Chinese) [李小秋, 高劲松, 冯晓国 2008 微波学报 24 7]
[20] [21] Li X Q, Feng X G, Gao J S 2009 Journal of Microwaves 25 16 (in Chinese) [李小秋, 冯晓国, 高劲松 2009 微波学报 25 16]
[22] [23] Jia H Y, Feng X G, Gao J S 2007 Optics and Precision Engineer-ing 15 978 (in Chinese) [贾宏燕, 冯晓国, 高劲松 2007 光学精密工程 15 978]
[24] Jia H Y, Gao J S 2007 Journal of CAEIT 2 593 (in Chinese) [贾宏燕, 高劲松 2007 中国电子科学研究院学报 2 593]
[25] [26] [27] Jia H Y, Gao J S, Feng X G 2008 Optics and Precision Engineer-ing 16 2076 (in Chinese)[贾宏燕, 高劲松, 冯晓国 2008 光学精密工程 16 2076]
[28] [29] Jia H Y, Gao J S, Feng X G, Sun L C 2008 Acta Optica Sinica 28 1596 (in Chinese) [贾宏燕, 高劲松, 冯晓国, 孙连春 2008 光学学报 28 1596]
[30] Jia H Y, Gao J S, Feng X G, Sun L C 2009 Acta Phys. Sin. 58 505 (in Chinese) [贾宏燕, 高劲松, 冯晓国, 孙连春 2009 58 505]
[31] [32] [33] Jia H Y, Gao J S, Feng X G 2008 Journal of Microwaves 24 36 (in Chinese) [贾宏燕, 高劲松, 冯晓国 2008 微波学报 24 36]
[34] Fang C Y, Zhang S R, Lu J, Wang J B, Sun L C 2010 Optics and Precision Engineering 18 1278 (in Chinese) [方春易, 张树仁, 卢俊, 汪剑波, 孙连春 2010 光学精密工程 18 1278]
[35] [36] [37] Fang C Y, Zhang S R, Lu J, Wang J B, Sun L C 2010 Acta Phys. Sin. 59 5023 (in Chinese) [方春易, 张树仁, 卢俊, 汪剑波, 孙连春 2010 59 5023]
[38] Wu T K 1995 Frequency Selective Surface and Grid Array (New York: Wiley) pp147175
[39]
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