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| 一种新的基于谐振型高阻抗表面的微波吸波屏 | |
| 引用本文： | 赵德林,宋耀良,朱艳萍.一种新的基于谐振型高阻抗表面的微波吸波屏[J].南京理工大学学报(自然科学版),2010,34(1). |
| 作者姓名： | 赵德林 宋耀良 朱艳萍 |
| 作者单位： | 1. 南京理工大学,电子工程与光电技术学院,江苏,南京,210094;南京信息工程大学,数理学院,江苏,南京,210044 2. 南京理工大学,电子工程与光电技术学院,江苏,南京,210094 3. 南京理工大学,电子工程与光电技术学院,江苏,南京,210094;南京信息工程大学,电子与信息工程学院,江苏,南京,210044 |
| 基金项目： | 国防科学技术预先研究跨行业基金;;南京信息工程大学自然科学基金(Y634) |
| 摘 要： | 依据电磁波传播规律和等效表面阻抗的计算方法,提出并设计了一种基于谐振型高阻抗表面的微波吸收屏。理论分析表明:当入射波频率介于2.95~4.15 GHz时,未加载电耗层的谐振表面呈高阻抗特性,反射系数R=+1;而在该谐振型高阻抗表面上加载一层极薄的且阻抗与自由空间相匹配的电耗层后,即可在该频率区间实现完美吸波,反射系数R<-10 dB的频宽约为700 MHz,最大吸收峰值在3.55 GHz。数值仿真结果与理论分析也比较吻合。所构建的吸波表面结构简单,而且拥有超薄(厚度仅为1.5 mm)、超轻和较宽的吸波频带。 |
| 关 键 词： | 微波吸收屏 高阻抗表面 谐振 反射系数 |
New Microwave Absorber Based on Resonant High-impedance Surface |
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| ZHAO De-lin,SONG Yao-liang,ZHU Yan-ping.New Microwave Absorber Based on Resonant High-impedance Surface[J].Journal of Nanjing University of Science and Technology(Nature Science),2010,34(1). | |
| Authors: | ZHAO De-lin SONG Yao-liang ZHU Yan-ping |
| Institution: | 1.School of Electronic Engineering and Optoelectronic Technology/a>;NUST/a>;Nanjing 210094/a>;China/a>;2.College of Mathematics and Physics/a>;Nanjing University of Information Science and Technology/a>;Nanjing 210044/a>;3.College of Electronic & Information Engineering/a>;Nanjing University ofInformation Science and Technology/a>;China |
| Abstract: | According to the electromagnetic propagation rule and the calculation methods of equivalent surface impedance,a new microwave absorber based on resonant high-impedance surface is proposed and designed.The theoretic analysis shows that the resonant surface without electric loss-sheet takes on a property of high-impedance in the frequency range of 2.95 to 4.15 GHz.But in this frequency range,it is a perfect absorber while the resonant surface is loaded with an ultra-thin electric loss-sheet with impedance mat... |
| Keywords: | microwave absorbers high-impedance surfaces resonance reflection coefficients |
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