An optimum gain pyramidal horn antenna (see Antenna Theory and Design by W. Stutzman and G. Thiele, John Wiley & Sons, New York, 1981, pgs 413-415) was simulated using XFDTD.

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The same horn antenna geometry shown in other XFDTD examples on our web site is used here to demonstrate the ability of the MPI version of XFDTD.

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In this example XFDTD 6 is used to make calculations for an open-flanged waveguide with a specialized dielectric slab window material used to match the waveguide impedance to the impedance of a liquid located at the waveguide flange terminus.

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