Abstract
Three dimensional (3D) antenna offers immense advantages such as improved radiation efficiency, wider bandwidth, reduced footprint, and a thermally efficient system when compared to planar antenna design. 3D antenna is designed by placing the radiation element on a top plane, with the electrical feed line on a lower plane. The 3D antenna mentioned in the past was designed to have a radiating element rest on an array of copper posts which are electrically driven from the feed line on a lower plane. This paper discusses on an improvement towards the 3D antenna design by modifying the ground plane to an high impedance surface (HIS). The HIS modified 3D antenna offers wide band and similar gains for a 2.4 GHz signal frequency for comparable antenna dimensions. The HIS modified through dielectric copper posts antenna was designed and analyzed with other 3D antennas.
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