C. Mroczkowski, W. Gwarek, T. Morawski, J. Modelski
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Analysis of circular horn antennas using the FD-TD method
Application of the vector two-dimensional FD-TD (finite-difference time-domain) method to the analysis of circular horn antennas is presented. An antenna should maintain axial symmetry of boundary conditions and can be arbitrarily shaped in two other directions, in the cylindrical coordinate system. The medium filling the antenna can be inhomogeneous. Modes of excitation of sinusoidal dependence on angle can be considered. A full-wave solution is obtained. An example of a circular horn antenna has been computed and compared with experimental data.<>
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