Analysis of handheld terminal a modified folded dipole antenna of mobile communication for FDTD method

摘要

There is bifilar helical antenna, as an antenna for handheld terminal mobile satellite communications. The antenna characteristics in fixing to modified folded dipole antenna proposed by E. E. Altshuler to the metal body was analyzed. In this paper, directivity, electric field is reported. The case in which the dimension of the metal body was variously changed in this structure was calculated for comparisons of FDTD and MoM. It is proven to be seldom effective on the effect to the directionality in the zenith direction, when the volume of the metal body increases.