中国物理B ›› 2022, Vol. 31 ›› Issue (12): 124201-124201.doi: 10.1088/1674-1056/ac8ce0

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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)   

  1. School of Electrical Engineering, Southwest Jiaotong University, Chengdu 611756, China
  • 收稿日期:2022-05-25 修回日期:2022-08-06 接受日期:2022-08-26 出版日期:2022-11-11 发布日期:2022-11-11
  • 通讯作者: Zhongming Yan E-mail:yzm@swjtu.edu.cn
  • 基金资助:
    Project supported by the Fundamental Research Funds for Central Universities (Grant No. 2682020GF03).

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)   

  1. School of Electrical Engineering, Southwest Jiaotong University, Chengdu 611756, China
  • Received:2022-05-25 Revised:2022-08-06 Accepted:2022-08-26 Online:2022-11-11 Published:2022-11-11
  • Contact: Zhongming Yan E-mail:yzm@swjtu.edu.cn
  • Supported by:
    Project supported by the Fundamental Research Funds for Central Universities (Grant No. 2682020GF03).

摘要: 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.

关键词: polarization conversion, reconfigurable metasurface, Fabry-Pérot resonance

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.

Key words: polarization conversion, reconfigurable metasurface, Fabry-Pérot resonance

中图分类号:  (Wave propagation, transmission and absorption)

  • 42.25.Bs
42.25.Ja (Polarization) 81.05.Xj (Metamaterials for chiral, bianisotropic and other complex media)