| ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS |
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Pancharatnam-Berry metasurface for terahertz wave radar cross section reduction |
| Shao-He Li(李绍和), Jiu-Sheng Li(李九生) |
| Center for THz Research, China Jiliang University, Hangzhou 310018, China |
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Abstract The digital coding metasurfaces need several kinds of meta-particle structures to obtain corresponding electromagnetic wave responses and require time-consuming optimization. In this paper, we present train-symbol-shaped meta-particles with various orientations utilizing Pancharatnam-Berry (PB) phase to achieve 1-, 2-, and 3-bit digital coding metasurfaces. Terahertz wave scattering patterns of the coding metasurfaces with regular and random sequences are given and discussed. They have strongly suppressed backward scattering with approximately -13.5 dB radar cross section (RCS) reduction in a wide band range from 0.85 THz to 1.6 THz. The proposed digital coding metasurfaces provide a simple way and new opportunities for manipulating terahertz wave scattering with polarization independence.
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Received: 24 March 2019
Revised: 09 June 2019
Published: 05 September 2019
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PACS:
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42.68.Mj
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(Scattering, polarization)
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| Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 61871355 and 61831012). |
Corresponding Authors:
Jiu-Sheng Li
E-mail: jshli@126.com
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Cite this article:
Shao-He Li(李绍和), Jiu-Sheng Li(李九生) Pancharatnam-Berry metasurface for terahertz wave radar cross section reduction 2019 Chin. Phys. B 28 094210
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