Non-Uniform Metasurface Luneburg Lens Antenna Design

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...

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Bibliographic Details
Published in:IEEE transactions on antennas and propagation 2012-09, Vol.60 (9), p.4065-4073
Main Authors: Bosiljevac, M., Casaletti, M., Caminita, F., Sipus, Z., Maci, S.
Format: Article
Language:English
Subjects:
Antennas
Applied sciences
Dielectrics
Directive antennas
Exact sciences and technology
Impedance
Lenses
Luneburg lens antennas
metamaterial surfaces
periodic surfaces
Permittivity
Radiocommunications
Refractive index
Surface impedance
Surface waves
Telecommunications
Telecommunications and information theory
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Description
Summary: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.
ISSN:0018-926X
1558-2221
DOI:10.1109/TAP.2012.2207047