Fast Frequency Sweep Scattering Analysis for Multiple PEC Objects
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Fast Frequency Sweep Scattering Analysis for Multiple PEC ObjectsAbstract
The best polynomial approximation, performed by Chebyshev approximation， is applied to the scattering analysis of multiple arbitrary shaped perfectly electric conducting objects over a broad frequency band. For a given frequency band, the frequency points corresponding to the Chebyshev nodes are found by transformation of coordinates, and the surface electric currents at these points are computed by the method of moments. The surface current is represented by a polynomial function via the Chebyshev approximation, and the electric current distribution can be obtained at any frequency point within the given frequency band. Numerical examples show that the results generated by the presented approach agree to that provided by the method of moments at each of the frequency points, but the CPU time of the presented approach is reduced obviously without sacrificing much memory.
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