Steering the Beam of Medium-to-High Gain Antennas Using Near-Field Phase Transformation

@article{Afzal2017SteeringTB,
  title={Steering the Beam of Medium-to-High Gain Antennas Using Near-Field Phase Transformation},
  author={Muhammad Usman Afzal and Karu P. Esselle},
  journal={IEEE Transactions on Antennas and Propagation},
  year={2017},
  volume={65},
  pages={1680-1690}
}
A method to steer the beam of aperture-type antennas is presented in this paper. Beam steering is achieved by transforming phase of the antenna near field using a pair of totally passive metasurfaces, which are located just above and parallel to the antenna. They are rotated independently or synchronously around the antenna axis. A prototype, with a peak gain of 19.4 dBi, demonstrated experimentally that the beam of a resonant cavity antenna can be steered to any direction within a large… CONTINUE READING

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