An Ultra-Wide Band Polarization-Independent Random Coding Metasurface for RCS Reduction

Huijuan Dai; Yongjiu Zhao; Huangyan Li; Jiaqing Chen; Zheng He; Wenjun Qi

doi:10.3390/electronics8101104

Electronics (Oct 2019)

An Ultra-Wide Band Polarization-Independent Random Coding Metasurface for RCS Reduction

Huijuan Dai,
Yongjiu Zhao,
Huangyan Li,
Jiaqing Chen,
Zheng He,
Wenjun Qi

Affiliations

Huijuan Dai: Key Laboratory of Radar Imaging and Microwave Photonics, Ministry of Education, College of Electronic and Information Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
Yongjiu Zhao: Key Laboratory of Radar Imaging and Microwave Photonics, Ministry of Education, College of Electronic and Information Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
Huangyan Li: Key Laboratory of Radar Imaging and Microwave Photonics, Ministry of Education, College of Electronic and Information Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
Jiaqing Chen: Key Laboratory of Radar Imaging and Microwave Photonics, Ministry of Education, College of Electronic and Information Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
Zheng He: Key Laboratory of Radar Imaging and Microwave Photonics, Ministry of Education, College of Electronic and Information Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
Wenjun Qi: Key Laboratory of Radar Imaging and Microwave Photonics, Ministry of Education, College of Electronic and Information Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China

DOI: https://doi.org/10.3390/electronics8101104
Journal volume & issue: Vol. 8, no. 10
p. 1104

Abstract

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In this paper, a novel ultra-wide band (UWB) random 3-bit coding metasurface with polarization independence has been designed to realize radar cross-section (RCS) reduction. The proposed structure consists of polarization conversion metasurfaces (PCMs), which possess the capability of rotating linear polarization waves to their orthogonal ones in an UWB. The polarization-independent property can be attributed to the random rotation angle of each constituting unit. Due to the randomness of 3-bit coding and rotation angle of each element, the divergence of the reflected beam is greatly improved. In addition, the effect of RCS reduction with respect to the unit period length and the unit position are also discussed. Finally, a prototype is fabricated and measured to validate the simulation. The experimental results demonstrate that an ultra-wide band RCS reduction over 10 dB, ranging from 18.3−42.2 GHz, can be attained by the proposed coding metasurface and the maximum reduction is 28.7 dB.

Published in Electronics

ISSN: 2079-9292 (Online)
Publisher: MDPI AG
Country of publisher: Switzerland
LCC subjects: Technology: Electrical engineering. Electronics. Nuclear engineering: Electronics
Website: http://www.mdpi.com/journal/electronics

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