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A conjugate gradient algorithm for the treatment of multiple incident electromagnetic fields

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3 Author(s)
Smith, C.F. ; US Air Force Syst. Command, Los Angeles Air Force Station, CA, USA ; Peterson, A.F. ; Mittra, R.

An iterative method based on the conjugate gradient (CG) algorithm is developed for the efficient treatment of equations involving multiple excitations. Examples show that significant time savings can be obtained as compared to treating each excitation individually with the conjugate gradient algorithm. However, these savings are not obtained without the drawback of increased memory requirements to store the additional excitations, residuals, and solutions. The efficiency of this algorithm tends to increase as additional excitations are added

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Antennas and Propagation, IEEE Transactions on  (Volume:37 ,  Issue: 11 )