Characteristics of a balance-fed loop antenna system for handsets in the vicinity of human head or hand

In this paper, in order to confirm the effectiveness of using the balanced antenna structure, the performance of the balance-fed antenna system for a handset under the influence of a human head or hand is analyzed numerically and experimentally. As a human head model, the COST (European Cooperation in the field of Scientific and Technical Research) 244 model, which has a spherical or cubic form, is used. The hand is simply simulated as the combined rectangular prism on the basis of the average size of human hands. The electromagnetic IE3D simulator by Zeland Software is used to obtain the antenna characteristics such as the current distribution and radiation pattern.