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In this article a very compact antenna system allowing simultaneous activation of a pre-defined number of sectors is presented. The design approach is based on using multiple retro-directive arrays co-localized in the near field of feeding sources. Parametric study in the 5 GHz WiFi frequency band of such an antenna system shows a very compact design of a 4-sectors antenna system with typically 10...
In this paper results of a parametric study showing the advantages of using magneto-dielectric materials, in comparison with pure dielectrics, as substrate support for miniature printed antenna, are presented. Further to the reported widening of the frequency bandwidth, it is shown that for a given antenna size and resonant frequency, almost fixed by the refractive index n √rHrΠ of the material, increasing...
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