An Efficient Numerical Method for Analyzing Quasi-Periodic Array

Characteristic mode analysis (CMA) has been able to effectively model and analyze periodic arrays, but quasi-periodic arrays are more commonly encountered in practical engineering. This paper first introduces the CMA method for quasi-periodic arrays, then introduces a method for establishing tabulation, which only requires one table construction to greatly reduce the filling time of the impedance matrix, thereby effectively reducing the solution time. Finally, the effectiveness of this method is verified through numerical examples.