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A Novel Coding Metasurface for Wireless Power Transfer Applications

Author

Listed:
  • Nguyen Minh Tran

    (Department of Electronic, Electrical and Computer Engineering, Sungkyunkwan University (SKKU), Suwon 16419, Korea)

  • Muhammad Miftahul Amri

    (Department of Electronic, Electrical and Computer Engineering, Sungkyunkwan University (SKKU), Suwon 16419, Korea)

  • Je Hyeon Park

    (Department of Electronic, Electrical and Computer Engineering, Sungkyunkwan University (SKKU), Suwon 16419, Korea)

  • Sa Il Hwang

    (Department of Electronic, Electrical and Computer Engineering, Sungkyunkwan University (SKKU), Suwon 16419, Korea)

  • Dong In Kim

    (Department of Electronic, Electrical and Computer Engineering, Sungkyunkwan University (SKKU), Suwon 16419, Korea)

  • Kae Won Choi

    (Department of Electronic, Electrical and Computer Engineering, Sungkyunkwan University (SKKU), Suwon 16419, Korea)

Abstract

We propose and implement a novel 1-bit coding metasurface that is capable of focusing and steering beam for enhancing power transfer efficiency of the electromagnetic (EM) wave-based wireless power transfer systems. The proposed metasurface comprises 16 × 16 unit cells which are designed with a fractal structure and the operating frequency of 5.8 GHz. One PIN diode is incorporated within each unit cell and enables two states with 180 ° phase change of the reflected signal at the unit cell. The two states of the unit cell correspond to the ON and OFF states of the PIN diode or “0” and “1” coding in the metasurface. By appropriately handling the ON/OFF states of the coding metasurface, we can control the reflected EM wave impinged on the metasurface. To verify the working ability of the coding metasurface, a prototype metasurface with a control board has been fabricated and measured. The results showed that the coding metasurface is capable of focusing beam to desired direction. For practical scenarios, we propose an adaptive optimal phase control scheme for focusing the beam to a mobile target. Furthermore, we prove that the proposed adaptive optimal phase control scheme outperforms the random phase control and beam synthesis schemes.

Suggested Citation

  • Nguyen Minh Tran & Muhammad Miftahul Amri & Je Hyeon Park & Sa Il Hwang & Dong In Kim & Kae Won Choi, 2019. "A Novel Coding Metasurface for Wireless Power Transfer Applications," Energies, MDPI, vol. 12(23), pages 1-14, November.
    • Handle: RePEc:gam:jeners:v:12:y:2019:i:23:p:4488-:d:290713
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    Citations

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    Cited by:

    1. Chan-Mi Song & Hong-Jun Lim & Son Trinh-Van & Kang-Yoon Lee & Youngoo Yang & Keum-Cheol Hwang, 2021. "Dual-Band RF Wireless Power Transfer System with a Shared-Aperture Dual-Band Tx Array Antenna," Energies, MDPI, vol. 14(13), pages 1-17, June.
    2. Yujun Shin & Jaehyoung Park & Haerim Kim & Seongho Woo & Bumjin Park & Sungryul Huh & Changmin Lee & Seungyoung Ahn, 2021. "Design Considerations for Adding Series Inductors to Reduce Electromagnetic Field Interference in an Over-Coupled WPT System," Energies, MDPI, vol. 14(10), pages 1-28, May.

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