Title :
A fast MoM solution for large arrays: Green´s function interpolation with FFT
Author :
Fasenfest, B.J. ; Capolino, F. ; Wilton, D.R. ; Jackson, D.R. ; Champagne, N.J.
Author_Institution :
Dept. of Electr. & Comput. Eng., Houston Univ., TX, USA
Abstract :
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.
Keywords :
Green´s function methods; antenna arrays; fast Fourier transforms; interpolation; method of moments; FFT; Green´s function interpolation; MoM solvers; adaptive integral method; arbitrary contour arrays; basis functions; fast Fourier transform; fast method of moments method; free space planar array elements; large arrays; missing element arrays; sparse uniform grid;
Journal_Title :
Antennas and Wireless Propagation Letters, IEEE
DOI :
10.1109/LAWP.2004.833713
