A broadband reflectarray antenna with double square rings as the cell elements

  title={A broadband reflectarray antenna with double square rings as the cell elements},
  author={M. R. Chaharmir and Jafar Shaker and Michel Cuhaci and Apisak Ittipiboon},
  journal={2006 First European Conference on Antennas and Propagation},
A reflectarray antenna composed of double square rings of variable lengths that are etched on a conductor backed substrate is proposed for bandwidth enhancement. Using this technique, a single layer reflectarray that has a wider bandwidth compared to conventional single layer reflectarrays is designed, fabricated and tested. Measured results demonstrate radiation efficiency close to 52% and 1-dB gain bandwidth of 9%, centered at 22.0 GHz. Another class of ¿loop¿ cell element namely, double… CONTINUE READING
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