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Non-Uniform Metasurface Luneburg Lens Antenna Design

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5 Author(s)
Bosiljevac, M. ; Fac. of Electr. Eng. & Comput., Univ. of Zagreb, Zagreb, Croatia ; Casaletti, M. ; Caminita, F. ; Sipus, Z.
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A metasurfing concept is demonstrated and applied in the design of Luneburg lens antennas. Using an array of size-varying circular patches on a dielectric substrate inside a parallel-plate waveguide (PPW) structure variable surface impedance is obtained, which realizes an equivalent refraction index as that of a Luneburg lens. The obtained lens has good bandwidth characteristics and significant fabrication advantages with respect to conventional dielectric lenses. Based on this PPW lens, an H-plane antenna has been designed and simulated.

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Antennas and Propagation, IEEE Transactions on  (Volume:60 ,  Issue: 9 )