摘要
设计并实验验证了一种具有低频吸收、高频透射性能的频率选择表面（FSS）。通过将加载集总电阻的吸波型FSS与具有频谱滤波特性的低反高透型FSS进行复合设计,获得对特定频段入射电磁波的选择性吸收与透射,从而实现吸波与透波的一体化设计。仿真结果表明,所设计的复合FSS在低频段（7.5～9.5 GHz）内吸收率大于90%,而在高频段（15.5～19 GHz）内透射率大于70%,最大透射率在18.1 GHz达到80%。利用电路板印刷工艺制备了复合FSS样品,并进行了实验测试,测试结果与仿真结果吻合较好。所设计的吸透一体化FSS在新型隐身天线罩领域具有较大的应用价值。
In this paper,a frequency selective surface with the properties of low-frequency absorption and high-frequency transmission is designed and experimentally verified. The absorbing FSS loaded with lumped resistance is firstly proposed,and then a layer of FSS with the spectral filtering characteristics of low-frequency reflection and high-frequency transmission is also introduced here on the below. The two layers of FSSs work together contributing the selective absorption and transmission of electromagnetic waves for specific frequency bands,which can be seen as a good achievement for the application of absorption-transmission integrated FSS. Approximate full wave simulation of the proposed structure is carried out by using CST Microwave Studio software. Simulation results show that the absorption efficiency of the composite FSS in the low frequency（ 7.5-9. 5 GHz） range is greater than 90%,the transmittance is higher than 70% at high frequency（ 15. 5-19 GHz）,and the maximum transmittance is 80% at 18. 1 GHz. As a proof,a FSS sample is fabricated by circuit board printing technology with the overall size of 305 mm×305 mm and contains 30×30 basic units. The experimental results show that the measurements are in good agreement with the simulations which further verifies the rationality of our paper. Meanwhile,our proposed FSS has advantages of thin thickness,good absorbing and wide wave width,which can be seen as great application in the field of new stealthy radome.
作者
李权
庞永强
沈理浩
屈绍波
LI Quan;PANG Yong-qiang;SHEN Li-hao;QU Shao-bo(Department of Basic Science,Air Force Engineering University,Xi＇an 710051,China)
出处
《微波学报》
CSCD
北大核心
2018年第5期26-30,共5页
Journal of Microwaves
基金
国家自然科学基金(61331005,61501497)
中国博士后科学基金(2015M572561)
关键词
频率选择表面
集总元件
选择性吸收
吸透一体
frequency selective surface
lumped element
selective absorption
absorption/transmission integration
