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Open AccessArticle

Broadband Polarization Conversion Metasurface Based on Metal Cut-Wire Structure for Radar Cross Section Reduction

1
School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan 430074, China
2
School of Information Science and Engineering, Wuhan University of Science and Technology, Wuhan 430081, China
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Authors to whom correspondence should be addressed.
Materials 2018, 11(4), 626; https://doi.org/10.3390/ma11040626
Received: 13 March 2018 / Revised: 12 April 2018 / Accepted: 17 April 2018 / Published: 19 April 2018
(This article belongs to the Section Structure Analysis and Characterization)
A class of linear polarization conversion coding metasurfaces (MSs) based on a metal cut-wire structure is proposed, which can be applied to the reduction properties of radar cross section (RCS). We firstly present a hypothesis based on the principle of planar array theory, and then verify the RCS reduction characteristics using linear polarization conversion coding MSs by simulations and experiments. The simulated results show that in the frequency range of 6–14 GHz, the linear polarization conversion ratio reaches a maximum value of 90%, which is in good agreement with the theoretical predictions. For normal incident x- and y-polarized waves, RCS reduction of designed coding MSs 01/01 and 01/10 is essentially more than 10 dB in the above-mentioned frequency range. We prepare and measure the 01/10 coding MS sample, and find that the experimental results in terms of reflectance and RCS reduction are in good agreement with the simulated ones under normal incidence. In addition, under oblique incidence, RCS reduction is suppressed as the angle of incidence increases, but still exhibits RCS reduction effects in a certain frequency range. The designed MS is expected to have valuable potential in applications for stealth field technology. View Full-Text
Keywords: coding metasurface; polarization conversion; energy scattering; RCS reduction coding metasurface; polarization conversion; energy scattering; RCS reduction
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MDPI and ACS Style

Yang, J.J.; Cheng, Y.Z.; Ge, C.C.; Gong, R.Z. Broadband Polarization Conversion Metasurface Based on Metal Cut-Wire Structure for Radar Cross Section Reduction. Materials 2018, 11, 626.

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