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A fast MoM solution for large arrays: Green's function interpolation with FFT

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5 Author(s)
B. J. Fasenfest ; Dept. of Electr. & Comput. Eng., Houston Univ., TX, USA ; F. Capolino ; D. R. Wilton ; D. R. Jackson
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A new type of fast method of moments (MoM) solution scheme for large arrays is developed using standard basis functions. Both fill and solve times are improved with respect to standard MoM solvers. The efficiency of the method relies on approximating the Green's function as a sum of separable interpolation functions defined on a relatively sparse uniform grid, along with use of the fast Fourier transform. The method permits the analysis of arrays with arbitrary contours and/or missing elements. Preliminary results show the effectiveness of the method for planar array elements in free space.

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IEEE Antennas and Wireless Propagation Letters  (Volume:3 ,  Issue: 1 )