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| Design and Development of Metamaterial Composite Absorber |
| Received:January 25, 2020 Revised:March 31, 2020 |
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| DOI：10.7643/issn.1672-9242.2020.08.011 |
| KeyWord:metamaterial composite absorber resonance unit radar reflectivity |
| Author | Institution |
| LI Xi |
Southwest Technology and Engineering Research Institute, Chongqing , China |
| WEI Wen-zheng |
Southwest Technology and Engineering Research Institute, Chongqing , China |
| WANG Jia-hui |
Southwest Technology and Engineering Research Institute, Chongqing , China |
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| Abstract: |
| The paper aims to develop a kind of new absorbing material that is of stronger radar wave attenuation and wider qualified bandwidth compared with traditional material. The metamaterial patterns in resonance unit and its combinations were designed. A metamaterial absorber was manufactured on a dielectric substrate by silk-steel screen printing process, and the metamaterial absorber was formed on the dielectric substrate and then compounded with traditional absorber to form metamaterial composite absorber. Different dielectric substrates, resonance unit patterns and combinations, conductive carbon black content on the performance of the absorber were comparatively analyzed. The experiments showed that metamaterial absorber can achieve a maximum reduction of bandwidth expansion that was −20 dB in peak reflectivity at 12~17 GHz and 17.1% when reflectivity was lower than −20 dB at 2~18 GHz compared with traditional absorber. The newly developed metamaterial composite absorber accomplishes the research goals of stronger decline in peak and wider qualified bandwidth, and have research value and direction guidance in development of future absorbing materials. |
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