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This paper presents a study of a rectangular slot antenna for ultrawide-band (UWB) applications. Antenna is fed by a triangle ring microstrip line. The frequency band considered is 3.1–10.6 GHz, which has approved by the Federal Communications Commission as a commercial UWB band. The proposed antenna has a VSWR less than 2, phase linearity, and gain flatness over the above frequency band.
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Geran et al. (2007) studied this question.
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