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An ultra-wideband (UWB) -plane monopulse antenna working in the frequency range from 3.1 to 10.6 GHz is proposed. The UWB -plane two-element array is constructed using Vivaldi antennas. By shortening the adjacent tapered lines of the two Vivaldi antennas and using corrugated edges, sum and difference characteristics of the array are improved. The UWB monopulse comparator is a multilayer planar...
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