期刊
JOURNAL OF PHYSICS D-APPLIED PHYSICS
卷 55, 期 1, 页码 -出版社
IOP Publishing Ltd
DOI: 10.1088/1361-6463/ac2111
关键词
metasurface; RCS reduction; radome; transparent window; frequency-selective
资金
- National Key Research and Development Program of China [2017YFA0700201]
- National Natural Science Foundation of China (NSFC) [91963128, 62071215, 61801207, 61731010]
- Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)
- Fundamental Research Funds for the Central Universities
- Jiangsu Provincial Key Laboratory of Advanced Manipulating Technique of Electromagnetic Wave
This paper proposes a frequency-selective metasurface that achieves low backward scattering in a wide microwave frequency band while maintaining inter-band transparent transmission. By designing the reflection properties and arrangement of meta-atoms, the phase cancellation of far-field backward scattering is achieved. Experimental verification confirms the accuracy of the simulation results.
Thin-thickness metasurfaces used for reducing radar cross section (RCS) have attracted much attention due to their promising prospects in many applications, like stealth techniques, antenna radomes, etc. One of the major challenges for antenna radome applications is to achieve inter-band high transmission in addition to broadband RCS reduction by a single device. Here, we propose a frequency-selective metasurface to realize low backward scattering in a wide microwave frequency band while maintaining an inter-band transparent window. To achieve this goal, two basic meta-atoms comprising three cascaded patterned sheets are designed to ensure out-of-phase reflection properties in two sidebands with in-phase high transmission in the center band. Then, we arrange meta-atoms into a checkerboard-like distribution to form the phase cancellation of far-field backward scattering. Simulated results show that the RCS can be reduced by more than 10 dB in a continuous band of 7.5-15.7 GHz while the insertion loss in the transmission window is less than 1.0 dB from 11.8 to 12.1 GHz. Experimental verifications from a fabricated prototype were carried out which agree well with the simulations. This work may provide an effective way to design microwave radomes or find applications in other electromagnetic compatibility devices.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据