Abstract: The dipole antenna array with a trough reflector is widely applied to base stations for mobile communications. The auto-modeling of the trough reflector is studied by AutoCAD firstly, and its surface meshes are obtained on the bais of many basic triangle patches. The data are further processed to make it convenient to get the electric characteristics of the base station antenna by MoM. Finally, the method of PNM is introduced to speed up the analysis of the radiation pattern of a new kind of base station antenna. Numerical results show the effectiveness and the accuracy of the analysis.

Key words: base station antenna, AutoCAD, method of moment(MoM), PNM