A high-gain antenna with U-slot using zero-index metamaterial superstrate

@article{Lin2017AHA,
  title={A high-gain antenna with U-slot using zero-index metamaterial superstrate},
  author={Jianyu Lin and Dongying Li},
  journal={2017 International Workshop on Antenna Technology: Small Antennas, Innovative Structures, and Applications (iWAT)},
  year={2017},
  pages={300-303}
}
A zero-index metamaterial unit cell working over a wide frequency band is presented. A three layer superstrate with metamaterial unit cells arranged in a 5 by 5 array is designed and placed over a mircostrip patch antenna with U-slot for antenna gain enhancement. The simulation results show that the gain of the metamaterial antenna is improved by nearly 4 dB throughout the operating band. 

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