Wide-Angle Scanning Phased Array Antennas Using Metasurface Slabs

Bin Xi, Yu Xiao*, Mengjiao Li, Yuanxin Li, Houjun Sun, Zengping Chen

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

17 Citations (Scopus)

Abstract

In this communication, a phased array antenna with an integrated metasurface is designed to achieve wideband and wide-angle scanning. Generally, the coupling between adjacent elements changes significantly as the scanning angle increases, resulting in limited scanning coverage. Two mutually perpendicular metasurface slabs are designed to achieve wide-angle scanning. The mutual coupling is reduced by properly tuning the dimension of the metasurface. Two perpendicular linear arrays were fabricated to verify the design. The measured 3 dB beamwidth of the active element pattern (AEP, in the array environment) with the integrated metasurface is about 150° in the E-plane and 109° in the H-plane, which is suitable for wide-angle scanning. The simulated and measured results indicate that the beam can scan from -78° to 78° with a 3 dB gain fluctuation in the E-plane array and a wide frequency range from 10 to 12.5 GHz (22.2%). In the H-plane array, the scan angle ranges from -69° to 69° with a 3 dB gain fluctuation and a relative bandwidth of 11%.

Original languageEnglish
Pages (from-to)9003-9008
Number of pages6
JournalIEEE Transactions on Antennas and Propagation
Volume69
Issue number12
DOIs
Publication statusPublished - 1 Dec 2021

Keywords

  • Beam-scanning
  • Vivaldi
  • metasurface slab
  • mutual coupling
  • phased array
  • wide-angle
  • wideband

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Xi, B., Xiao, Y., Li, M., Li, Y., Sun, H., & Chen, Z. (2021). Wide-Angle Scanning Phased Array Antennas Using Metasurface Slabs. IEEE Transactions on Antennas and Propagation, 69(12), 9003-9008. https://doi.org/10.1109/TAP.2021.3098569