A Fast Impedance and Pattern Computation Scheme for Finite Antenna Arrays

A fast numerical method, well-suited to the analysis of moderate-size arrays made of complex elements, is presented. It combines macro basis functions and multipole approaches, without an iterative procedure. This method is exploited to estimate the impedance matrix and active element patterns. For the latter, an efficient formulation is provided, as a series of pattern multiplication problems. Examples are shown for arrays of broadband dipoles. The computational gain obtained for the reduction of the original method of moments system of equations is briefly described