Modification of the SEMN method to speed up numerical calculations

The SEMN (Surface Equivalence principle and Multiport Network theory) method is potentially able to analyze arbitrary shaped microstrip, antennas. However, due to large computations involved, it is limited to symmetric structures. Here, the SEMN method is further developed to improve computational efficiency. The numerical calculations of SEMN are accelerated without accuracy and functionality loss by two techniques. The speed of calculations, which is more than fifty times faster than before, enables us to analyze arbitrary shaped microstrip patch antennas or arrays. The modified technique is applied to a rectangular patch and the results are compared with the original approach. Excellent agreement between the two cases is achieved.