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A novel printed monopole antenna with an ultra‐wide bandwidth is presented. The proposed antenna has very compact size (12 × 22 mm2) as well as very simple configuration and easily fed by using a 50 Ω microstrip line. The antenna impedance bandwidth based on S11 < −10 dB is from 3 to 14 GHz, about 130%. A stably omnidirectional radiation patterns over a wide bandwidth is obtained. These features will make the antenna attractive for modern ultra‐wideband applications.
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Naser‐Moghadasi et al. (2010) studied this question.
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