In this study, optimum locations for a loop-type ground radiation antenna are evaluated for Diffuser Set C-shaped ground planes of two different sizes.To achieve good radiation performance, the antenna needs to be located such that it couples with the dominant current mode of the ground plane.Antenna locations are proposed using the characteristic mode analysis of the ground planes.The measured bandwidths of the antennas at the proposed locations have more than Outdoor Sofa/Chairs/Table Set (Set of 4) twice the bandwidths of the cases in which the antennas are coupled with non-dominant modes.
The operating frequency of the antennas is 2.45 GHz.