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<p>Electronically reconfigurable reflectarray antennas (RRAs) are attracting significant attention in satellite communication and numerous wireless communication systems that require beam steering, as they enable beam reconfiguration by individually controlling the phase of reflective elements. In this paper, we propose a 1-bit reconfigurable reflectarray antenna with a wide operating bandwidth. The proposed unit cell provides two operational modes by utilizing two PIN diodes. Through unit cell simulations, it was confirmed that the two operational modes present a 180° phase shift in the frequency range of 13.2–16.9&#xa0;GHz. The developed antenna was implemented as an array antenna with 256 unit-cells, and the measured maximum gain and aperture efficiency were 20.95 dB and 26.9%, respectively, higher than those reported for similar structures in recent literature.</p>

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A Wideband, High-Gain 1-Bit Electronically Reconfigurable Reflectarray Antenna

  • 期刊论文

  • 发表日期：

    2025年9月16日

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  • Ji-Yeon Ha,
  • Dong-Wook Seo

摘要

Electronically reconfigurable reflectarray antennas (RRAs) are attracting significant attention in satellite communication and numerous wireless communication systems that require beam steering, as they enable beam reconfiguration by individually controlling the phase of reflective elements. In this paper, we propose a 1-bit reconfigurable reflectarray antenna with a wide operating bandwidth. The proposed unit cell provides two operational modes by utilizing two PIN diodes. Through unit cell simulations, it was confirmed that the two operational modes present a 180° phase shift in the frequency range of 13.2–16.9 GHz. The developed antenna was implemented as an array antenna with 256 unit-cells, and the measured maximum gain and aperture efficiency were 20.95 dB and 26.9%, respectively, higher than those reported for similar structures in recent literature.