Use of Gaussian ray basis functions in ray tracing methods for applications to high frequency wave propagation problems
Journal
IEE Proceedings: Microwaves, Antennas and Propagation
Journal Volume
147
Journal Issue
2
Pages
77-81
Date Issued
2000
Author(s)
Abstract
Traditional ray tracing approaches require a large number of geometrical optical (GO) ray tubes, and can become inefficient in many practical applications. The pulse-type basis functions of GO ray tubes cannot provide good representation in the field expansion if the field to be expanded is not locally planar or the size of the GO ray tubes is too large. A recently developed Gaussian ray basis function (GRBF) has a Gaussian-type amplitude distribution and is suitable to replace a GO ray tube in the ray tracing approaches because the Gaussian-type distribution tends to yield a more efficient field expansion. The GRBFs are incorporated into existing computer programs of generalised ray expansion (GRE). Numerical results validate its accuracy and efficiency in comparison with GO-based GRE for the prediction of EM scattering from open cavities.
Type
journal article