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A novel compact ultra-wideband (UWB) wide slot antenna with via holes is presented for UWB applications.The antenna is composed of a trapezoidal slot on the ground plane, a rectangular patch in the center of the slot and three via holes connecting the rectangular patch and the microstrip feed-line.The antenna is successfully designed, implemented, and measured.The measured results show that the proposed antenna with compact size of 27.0 mm × 29.0 mm × 1.0 mm achieves good performance, such as an impedance matching bandwidth of 111.7% (|S 11 | ≤ -10 dB), constant gain and stable radiation patterns over its whole frequency range.
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Chen et al. (2009) studied this question.
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