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Design of resistor-loaded coding metasurface for independent amplitude and phase control

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  • Shiyun Zhou
  • Tianwu Li
  • Erping Li

Abstract

Due to their subwavelength thickness, light weight and easy fabrication, metasurfaces show obvious advantages over 3D metamaterials. Among this, a new concept so-called digital coding metasurfaces which are described in a direct manner by quantized reflection or refraction phases was proposed. This paper proposes a scheme to achieve simultaneous and independent control of phase and amplitude responses via a reflective coding metasurface as it would be beneficial for full control of propagation of electromagnetic waves. The deflection of the reflected beam is dominated by designed coding patterns of digital unit cells while the amplitude adjustment depends on tuning values of loaded resistances on the unit cells. The simulation and experimental results confirm the function of the metasurface proposed above. The independent control of both phase and amplitude profiles of EM waves implies the potential application in beam shaping and high-quality holography.

Suggested Citation

  • Shiyun Zhou & Tianwu Li & Erping Li, 2021. "Design of resistor-loaded coding metasurface for independent amplitude and phase control," Journal of Electromagnetic Waves and Applications, Taylor & Francis Journals, vol. 35(12), pages 1575-1586, August.
    • Handle: RePEc:taf:tewaxx:v:35:y:2021:i:12:p:1575-1586
    DOI: 10.1080/09205071.2021.1908916
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