Title :
Solution to some electromagnetic problems using fast Fourier transform with conjugate gradient method
Author_Institution :
ETSIT Universidad Politécnica de Madrid, Grupo de Radiación, Madrid, Spain
Abstract :
Using the fast Fourier transform (FFT) to compute the convolution integrals that appear in the conjugate-gradient method (CGM), an efficient numerical procedure to solve electromagnetic problems is obtained. In comparison with the method of moments (MM), the proposed FFT-CGM avoids the storage of large matrices and reduces the computer time by orders of magnitude.
Keywords :
electromagnetic waves; electromagnetism; fast Fourier transforms; numerical methods; EM waves; FFT; conjugate gradient method; convolution integrals; electromagnetic problems; fast Fourier transform; numerical procedure;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19860719
