Multiport Network Modeling of a Complex Canonicaly Shaped Patch Antenna

In this paper an implementation of MNM (Multiport Network Model) on a complex radiating structure based on canonically shaped elements is presented. The segmentation method is used to approximate the shape of a collinear microstrip patch antenna (CoMPA) excited by mode TM₀₅. The MNM results have been compared with the method of moment based IE3D results as well as with the measurement. In order to implement the calculation as fast as possible a sensitivity analysis of the number of modes involved in the summation in the Z-matrix calculation has been performed.