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A wideband 1 bit reconfigurable transmitarray antenna based on proximity-coupled feed patch element

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  • Xiuwen Tian
  • Lizhong Song

Abstract

In this paper, a wideband 1-bit reconfigurable transmit array antenna (RTA) is proposed. The 1-bit RTA element consists of a passive receiving antenna and a reconfigurable radiating antenna, which adopt a proximity-coupled feed method to broaden the transmission bandwidth. Two p-i-n diodes are integrated into the reconfigurable receiving antenna to control the current distribution. By switching the states of the p-i-n diodes, the reconfigurable radiating antenna can achieve a 1-bit phase shift. Element simulation results show that the proposed RTA element can achieve a 3 dB transmission bandwidth of 21.5%. A 100-element RTA prototype with 200 p-in diodes is designed, fabricated and measured. The measured results show that the peak gain is 18.8 dBi at 5.05 GHz, corresponding to an aperture efficiency of 20.8%, and the 3 dB gain bandwidth is 17.1%. Furthermore, the scanned beams can reach −32° and −36°, respectively, in the E- and H-planes.

Suggested Citation

  • Xiuwen Tian & Lizhong Song, 2024. "A wideband 1 bit reconfigurable transmitarray antenna based on proximity-coupled feed patch element," Journal of Electromagnetic Waves and Applications, Taylor & Francis Journals, vol. 38(4), pages 460-472, March.
    • Handle: RePEc:taf:tewaxx:v:38:y:2024:i:4:p:460-472
    DOI: 10.1080/09205071.2024.2319131
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