Circular array of wideband 3D Vivaldi antennas

@article{Sarkis2010CircularAO,
  title={Circular array of wideband 3D Vivaldi antennas},
  author={Remi Sarkis and Christophe Craeye},
  journal={2010 URSI International Symposium on Electromagnetic Theory},
  year={2010},
  pages={792-794}
}
This communication presents a novel 3D Vivaldi antenna array with 4∶1 bandwidth without the need for balun feeding. A circular array of 8 elements of this 3D Vivaldi antenna is simulated using the Array Scanning Method applied to Method of Moments. It is found that connecting the antennas provides a smoother frequency response. The array is well suited for wideband direction finding with good polarimetric sensitivity. Its calibration made easy by the circular symmetry of the structure. 
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