Scattering Analysis of Antenna by Using Ludwig Based Hybrid Method

Year 2018, Volume: 31 Issue: 4, 1156 - 1164, 01.12.2018

Tayfun Okan , Nursel Akcam

Abstract

Solving an electromagnetic problem can be
handled in two phases. These are modelling the setup and carrying out the numeric evaluations. Throughout this study, the
structure is modelled by Bézier surfaces and the antenna used is meshed with triangular patches. For
the calculation part, the method of moments and physical optics (MoM-PO) hybrid
method is implemented. While the calculations related with antenna are
actualized by using MoM equations, the ones related with structure are obtained
by using PO equations. Modified Ludwig’s Algorithm is applied to calculate the
current integral for the PO-region. This gives the ability to obtain successful
results when the antenna is both close and far from the structure. Overall the
stated modelling and calculation technique gives accurate results and saves
time and memory in comparison with MoM. 

Keywords

B-spline surfaces, Ludwig’s Algorithm, Method of moments, Physical optics, Scattering problems, Ludwig’s Algorithm

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