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1 Journal of Telecommunications and Information Technology

1 2005

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Mesh-free approach to Helmholtz equation based on radial basis functions

Kowalczyk P., Mrozowski M.

Journal of Telecommunications and Information Technology

2005

nr 2

71-74

Recently, a radial basis functions (RBFs) method, which was originally proposed for interpolation problems, has been developed and applied to solve partial differential equations and eigenproblems. Properties of that method (meshfree algorithm) allows one to use it in many areas, including electromagnetics. In this paper the mesh-free RBF method for solving Helmholtz equation was applied and a new adaptive algorithm for defining the set of interpolation centers was proposed. Using the proposed approach the cutoff wavelengths and the field distribution in cylindrical waveguides of arbitrary cross-section were calculated with a high accuracy.