Concept of variable or non-uniform metasurfaces allows a very high level of control over the electromagnetic wave paths. In this paper this control is achieved by gradually modifying the geometry of subresonant printed patches on a grounded dielectric substrate. This allows us to change the phase velocity or the propagation path of the guided wave. This property was used to design a Luneburg lens which was then inserted into an H-plane horn to improve the horn's radiation characteristics. The results of this idea are demonstrated using full wave simulations, showing the applicability of this concept.
Bosiljevac, M., Sipus, Z., Casaletti, M., Caminita, F., Maci, S. (2012). Designing horn antennas based on variable metasurface concept. In Proceedings of 6th European Conference on Antennas and Propagation, EuCAP 2012 (pp.1692-1695). New York : IEEE [10.1109/EuCAP.2012.6206348].
Designing horn antennas based on variable metasurface concept
Casaletti, M.;Caminita, F.;Maci, S.
2012-01-01
Abstract
Concept of variable or non-uniform metasurfaces allows a very high level of control over the electromagnetic wave paths. In this paper this control is achieved by gradually modifying the geometry of subresonant printed patches on a grounded dielectric substrate. This allows us to change the phase velocity or the propagation path of the guided wave. This property was used to design a Luneburg lens which was then inserted into an H-plane horn to improve the horn's radiation characteristics. The results of this idea are demonstrated using full wave simulations, showing the applicability of this concept.
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https://hdl.handle.net/11365/1042824