Miniaturized dual-band antenna array with double-negative (DNG) metamaterial for wireless applications

Abstract

A miniaturized dual-band antenna array using a negative index metamaterial is presented for WiMAX, LTE, and WLAN applications. This left-handed metamaterial plane is located behind the antenna array, and its unit cell is a combination of split-ring resonator, square electric ring resonator, and rectangular electrical coupled resonator. This enables the achievement of a metamaterial structure exhibiting both negative permittivity and permeability, which results in antenna size miniaturization, efficiency, and gain enhancement. Moreover, the proposed metamaterial antenna has realized dual-band operating frequencies compared to a single frequency for normal antenna. The measured reflection coefficient (S11) shows a 50.25% bandwidth in the lower band (from 2.119 to 3.058 GHz) and 4.27% in the upper band (from 5.058 to 5.276 GHz). Radiation efficiency obtained in the lower and upper band are >95 and 80%, respectively.

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Correspondence to Mohd Faizal Jamlos.

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Alqadami, A.S.M., Jamlos, M.F., Soh, P.J. et al. Miniaturized dual-band antenna array with double-negative (DNG) metamaterial for wireless applications. Appl. Phys. A 123, 22 (2017). https://doi.org/10.1007/s00339-016-0678-3

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Keywords

  • Patch Antenna
  • Radiation Efficiency
  • Negative Refractive Index
  • Negative Permittivity
  • Unit Cell Structure