GROUNDED UNIAXIAL MATERIAL SLABS AS MAGNETIC CONDUCTORS

The objective of this paper is all-angle artiflcial magnetic conductor, i.e., artiflcial magnetic conductor that has stable magnetic- wall efiect with respect to the incidence angle. Furthermore, we seek for a design that would be easy for manufacturing. In order to achieve this we use grounded uniaxial material slabs and we do not constrict ourselves to naturally available materials. Instead, we assume that the desired parameters can be synthesized using the emerging artiflcial electromagnetic materials. It is found that it is possible to have an all-angle magnetic-wall efiect for both TE and TM polarization. Especially for the TM flelds the structure would be easily manufacturable. The proposed structure has similar appearance as more well-known artiflcial impedance surfaces, but the design parameters and the physical properties behind the magnetic wall efiect are novel. The performance of the proposed artiflcial magnetic conductor is verifled with numerical simulations. This paper introduces a new approach how to obtain a magnetic-wall efiect. It is possible to use this this approach also together with other ways of obtaining the magnetic-wall efiect for dual-band operation.

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