Abstract
The SEMN (surface equivalence principle and multiport network theory) method is potentially able to analyze arbitrary shaped microstrip antennas. Large structures and arrays cannot be analyzed by the time-consuming SEMN method. Here, two techniques are applied to improve computational efficiency, without accuracy and functionality loss. The modified method is applied to a four-element microstrip array and the results are compared with measurements, In addition, double Shank's method, a numerical technique to speed up the convergence rate of the series is used to study an infinite periodic microstrip array. The results of an infinite probe-fed periodic microstrip array antenna are compared with the MOM solution. Excellent agreement is observed for both finite and infinite arrays.
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