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A novel ultra‐wideband wide‐slot antenna fed with a microstrip‐line is presented. The antenna is composed of a circular microstrip patch and a semicircular arc cut on the ground of the microstrip line. The measured results show that the proposed antenna has an impedance bandwidth of more than 150% (|S 11 | < −10 dB) and stable radiation patterns over its whole frequency band.
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Chen et al. (2006) studied this question.
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