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A dual band‐notched ultrawideband antenna is proposed in this article. The antenna consists of a U‐shaped radiation patch and a ground plane which is symmetric with the edge of the radiation patch. By attaching two T‐shaped slots on the radiation patch and two rectangular complementary split‐ring resonators on both sides of the microstrip line, two notched bands, 3.3–3.7 GHz for WiMAX and 5.15–5.825 GHz for WLAN are achieved, respectively. The dimension of the proposed antenna is 24.6 mm × 38.1 mm × 1.5 mm. The measured result shows that the antenna has a wide impedance bandwidth and omnidirectional radiation patterns. Moreover, time‐domain characteristics and conceptual circuit model based on the input impedance of the proposed antenna are investigated to verify the dual band‐notched characteristics.
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Gao et al. (2015) studied this question.
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