Analysis of the loss from a human hand for the reduction of spatial losses

The total radiated power is one of the most important factor for designing a mobile handset. Thus, in this work, a spatial loss which comes from a human hand was studied to find an effective way to reduce losses and increase the radiated power. A simple lossy object and a half-wavelength dipole antenna were used for the analysis to find a basic principle of the generation of electric fields inside a human hand. From the results, it was verified that there are internal resonance modes in which the electric field and the loss are maximized, and the resonance depends on the shape and size of a lossy object. Therefore, it must be possible to reduce the loss from a human hand by designing the handset antenna to avoid the resonant mode.