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This article presents a novel ultra‐wideband (UWB) microstrip‐fed planar monopole antenna composed of a rectangular patch and a ground‐plane π‐shape slot structure. Impedance bandwidth of the proposed antenna is ∼147% over an UWB frequency range between 3 and 19.7 GHz satisfying FCC's requirements for an antenna by a factor in excess of twofold.
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Naser‐Moghadasi et al. (2010) studied this question.
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