International Journal of Antennas and Propagation (Jan 2023)

An Ultra-Wideband MIMO Bowl-Shaped Monopole Antenna with Sturdy and Simple Construction

  • Changxian Li,
  • Pin Wen,
  • Xiujuan Lin,
  • Di Wu,
  • Changfei Zhou

DOI
https://doi.org/10.1155/2023/5667834
Journal volume & issue
Vol. 2023

Abstract

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Anultra-wideband (UWB) bowl-shaped monopole antenna with a sturdy, simple, and lightweight structure is proposed, and then is used to compose the 3 × 3 multiple input multiple output (MIMO) antenna. The wide bandwidth is determined by the outline of the monopole, which has a quarter wavelength and high-order modes. The inner part of the bowl-shaped monopole is removed for a light weight. The simulated and measured results show that an ultra-wide band of 2.3–8.1 GHz (5.8 GHz, 111.5%) and a high isolation of greater than 20 dB between the antenna elements of the MIMO antenna can be achieved.