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A common problem with planar ultrawideband (UWB) monopole antennas is that their performance is heavily affected by the ground plane. To resolve this problem, a novel approach is proposed in this letter. Slots along the top edge of the ground are introduced to minimize the ground-plane effects by changing the current distribution. An equivalent circuit model is developed to obtain an insight view...
A perturbation model with a single-offset microstrip feed is used in the design of a corner-deleted square patch microstrip antenna. It is shown that the use of the offset-feed significantly increases the size of the deleted segments and thus relaxing the fabrication tolerance.
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