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Modeling the Physical Optics Currents in a Hybrid Moment-Method-Physical-Optics Code
Jose Manuel TABOADA Fernando OBELLEIRO Jose Luis RODRIGUEZ Jose Oscar Rubiños LOPEZ
IEICE TRANSACTIONS on Electronics
Publication Date: 2001/09/01
Print ISSN: 0916-8516
Type of Manuscript: PAPER
Category: Electromagnetic Theory
moment method (MM), physical optics (PO), hybrid methods, expansion functions,
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This paper shows a comparison between several procedures to represent the Physical Optics (PO) current density into a hybrid Moment-Method-Physical-Optics (MM-PO) code. Some numerical results demonstrate that a set of basis functions suitable for the Method of Moments (MM) may be inappropriate to model the PO currents. A new evaluation of the PO operator is proposed. The radiation can be analytically determined and, since it includes a linear interpolation of the phase, it can be applied over large triangular domains. This allows a drastic reduction of the computational cost, maintaining or even improving the level of accuracy.