High Frequency Wave Propagation

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Asymptotic Phasefront Extraction of High Frequency Wave Components from a Numerical Mesh

Robert Burkholder

Department of Electrical and Computer Engineering at Ohio State University

Abstract:   Electromagnetic wave solutions for electrically large geometries are composed of a finite number of high frequency wavefronts, or "phasefronts." If a frequency domain numerical solution is available, such as from the method of moments or the finite element method, these phasefronts may be extracted at any point in the numerical mesh using spectral estimation techniques. A map of the phasefronts is useful for visualizing the flow of EM energy as well as for defining high frequency basis functions which may be used at even higher frequencies. Numerical results from the method of moments will be presented.