Abstract
ABSTRACTThe single-source equivalence principle algorithm has been proposed as an efficient solution for analyzing large array structures. However, due to the discretization error of the identity operator, the accuracy of single-source equivalence principle algorithm is not good. In this paper, a single-source tangential equivalence principle algorithm is proposed to improve the accuracy by using the tangential field projection scheme. Based on this scheme and extinction theorem, a new relation between equivalence electric current and magnetic current can be established which has more accurate discretization. Moreover, it is demonstrated that the single-source equivalence principle algorithm can be derived from one type of single-source tangential equivalence principle algorithm. Numerical examples are designed to demonstrate the accuracy improvement of the proposed method.
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