The analysis of cylindrical dipole array for base stations

A linear dipole array mounted on a finite solid conducting cylinder has potential application in mobile communications. In this paper, the radiation characteristic of this type of antenna array is analyzed using the finite-difference time-domain (FDTD) method. The key features of the FDTD implementation are discussed, with particular emphasis placed upon modeling of the source region and comparison of the convergence character of difference antenna feed models. The technique is used to predict the patterns of the cylindrical dipole array. The FDTD results agree well with the computation results from the method of moments (MOM).