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Solution to some electromagnetic problems using fast Fourier transform with conjugate gradient method

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1 Author(s)
Cátedra, M.F. ; ETSIT Universidad Politécnica de Madrid, Grupo de Radiación, Madrid, Spain

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.

Published in:

Electronics Letters  (Volume:22 ,  Issue: 20 )