Impact of Some Discontinuities on the Convergence of Numerical Methods in Electromagnetics
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Impact of Some Discontinuities on the Convergence of Numerical Methods in ElectromagneticsAbstract
The effect of discontinuities at edges and at feed-points of antennas on numerical convergence rates is investigated. In the case of edges, higher order representations of the edge-mode, expressed with the aid of Hermite splines, are shown to provide improved convergence in both global and local measures. When using a magnetic frill to excite an antenna, it is shown that when the current representation allows for the "charge jump" across the frill, then convergence is accelerated. The use of both sub-domain and entire-domain functions is explored.
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