| ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS |
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Transmission-type reconfigurable metasurface for linear-to-circular and linear-to-linear polarization conversions |
| Ping Wang(王平), Yu Wang(王豫), Zhongming Yan(严仲明)†, and Hongcheng Zhou(周洪澄) |
| School of Electrical Engineering, Southwest Jiaotong University, Chengdu 611756, China |
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Abstract We present a transmission-type polarization conversion metamaterial (PCM) whose functions can be dynamically switched among the linear-to-circular (LTC) and linear-to-linear (LTL) polarization conversions. The proposed PCM consists of a grating, a polarization conversion surface and a reconfigurable polarization selective surface incorporated with PIN diodes. By changing the states of diodes, the PCM can achieve the reconfigurable manipulations for incident waves. The Fabry-Pérot (F-P) resonances excited by the PCM contribute to the polarization conversions, as is illustrated. Moreover, through establishing the F-P-like cavity model and analyzing the electric field components of the transmitted waves, the conditions for realizing LTC polarization conversion are revealed, which can guide the construction of PCM. The prototype of PCM is fabricated and measured, which can achieve LTC and LTL polarization conversions within 3.31-3.56 GHz and 2.76-4.24 GHz, respectively, the polarization conversion ratios of two functions are higher than 0.95. The measurement results are in agreement with the simulation data.
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Received: 25 May 2022
Revised: 06 August 2022
Accepted manuscript online: 26 August 2022
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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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42.25.Ja
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(Polarization)
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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 Fundamental Research Funds for Central Universities (Grant No. 2682020GF03). |
Corresponding Authors:
Zhongming Yan
E-mail: yzm@swjtu.edu.cn
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Cite this article:
Ping Wang(王平), Yu Wang(王豫), Zhongming Yan(严仲明), and Hongcheng Zhou(周洪澄) Transmission-type reconfigurable metasurface for linear-to-circular and linear-to-linear polarization conversions 2022 Chin. Phys. B 31 124201
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