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Volume : II, Issue : XI, December - 2012 STUDYOFHIGH DIRECTIVITYIN LOWPERMITTIVITY METAMA TERIALSLABS FOR LEAKY -W A VE MODELS PRASHANTBARIY AR DOI : 10.9780/22307850, Published By : Laxmi Book Publication Abstract : Investigation has been carried out on the directivity of grounded
low–permittivity metamaterial slab structures that achieve highly directive broadside
radiation. T wo–dimensional (2D) configurations excited by electric line sources are
considered, adopting a scalar plasma–like dispersive permittivity for the metamaterial
medium that suitably models a wire medium in the presence of a 2D electromagnetic
field, with the electric field directed along the wire axes. The role of leaky waves in
producing the high directivity attainable with such structures is illustrated by comparing
it with a simple ray–optic model for the radiation mechanism.
Keywords : Article : Cite This Article : PRASHANTBARIY AR, (2012). STUDYOFHIGH DIRECTIVITYIN LOWPERMITTIVITY METAMA TERIALSLABS FOR LEAKY -W A VE MODELS. Indian Streams Research Journal, Vol. II, Issue. XI, DOI : 10.9780/22307850, http://oldisrj.lbp.world/UploadedData/1801.pdf References : - K.C. Gaupta, Narrow—beam antennas using an artificial dielectric mediumwith permittivity less than unity . Electron Lett. 7 (1971), 16—18.
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