ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS |
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A linear-to-circular polarization converter based on I-shapedcircular frequency selective surfaces |
Jia-Liang Wu(吴家梁)1, Bao-Qin Lin(林宝勤)1, Xin-Yu Da(达新宇)1, Kai Wu(吴凯)2 |
1 Information and Navigation College, Air Force Engineering University, Xi'an 710077, China; 2 Air and Missile Defense College, Air Force Engineering University, Xi'an 710051, China |
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Abstract In this paper, a linear-to-circular polarization converter using a three-layer frequency selective surface based on I-shaped circular structure resonant is presented and investigated. Numerical simulations exhibit that when the normal y-polarized waves impinge on this device propagating towards +z direction, the two orthogonal components of the transmitted waves have a 90° phase difference as well as the nearly equal amplitudes at the resonant frequency of 7.04 GHz, which means that the left-hand circular polarization is realized in transmission. For validating the proposed design, a prototype which consists of 25×25 elements has been designed, manufactured and measured. The measured results are in good agreement with the simulated ones, showing that the polarization conversion transmission is over -3 dB in the frequency range of 5.22-8.08 GHz and the axial ratio is below 3 dB from 5.86 GHz to 7.34 GHz.
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Received: 19 November 2016
Revised: 20 April 2017
Accepted manuscript online:
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PACS:
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42.25.Bs
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(Wave propagation, transmission and absorption)
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73.20.-r
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(Electron states at surfaces and interfaces)
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81.05.Xj
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(Metamaterials for chiral, bianisotropic and other complex media)
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Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 61471387, 61271250, and 61571460). |
Corresponding Authors:
Jia-Liang Wu
E-mail: wujia2538@126.com
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Cite this article:
Jia-Liang Wu(吴家梁), Bao-Qin Lin(林宝勤), Xin-Yu Da(达新宇), Kai Wu(吴凯) A linear-to-circular polarization converter based on I-shapedcircular frequency selective surfaces 2017 Chin. Phys. B 26 094201
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