Study of the characteristics of a portable hand-held phone antenna by MoM

In this paper, the characteristics of one kind of portable hand-held phone antenna are analyzed by the Method of Moments (MoM). Based on the Pocklington equation and Galerkin method, the current distribution and input impedance of the hand-held phone are calculated. In addition, the characteristics of the monopoles mounted on different dimensions of conducting chassis box are analysed. The results indicate that the dimension of the conducting chassis box affects the performance of the hand-held phone antenna significantly, and it can act as a factor to adjust the performance of hand-held phone antenna.