Browsing by Subject "Acceleration algorithm"

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    Efficient analysis of large finite arrays via mom formulation with dft based acceleration algorithms
    (2003) Çivi, Ö. A.; Ertürk, Vakur B.; Chou, H.-T.
    A DFT based acceleration algorithm is combined with iterative methods to accelerate the computation of Method of Moments (MoM) analysis of electromagnetic radiation/scattering from large, finite free-standing and printed elements of phased arrays. Computational complexity of this approach is O(Ntot), where Ntot is the number of unknowns. Numerical results are presented to validate the efficiency and accuracy of the method.
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    Integral equation based method for the fast analysis of irregularly contoured large finite phased arrays
    (Institution of Engineering and Technology, 2007) Ertürk, Vakur B.; Çivi, Ö. A.
    A fast and accurate integral equation based hybrid method that can investigate electrically large, arbitrarily contoured finite planar arrays of printed elements is developed. The method is a hybridization of the Galerkin type method of moments (MoM) and generalized forward backward method (GFBM) with the grounded dielectric slab's Green's function; and the acceleration of the resultant hybrid method by a discrete Fourier transform (DFT) based acceleration algorithm. Numerical results in the form of array current distribution are given for arbitrarily contoured as well as thinned arrays of probe fed microstrip patches where current on each element expanded by more than one subsectional basis function.