A miniaturised coplanar waveguide‐fed multiple notched monopole antenna for ultra‐wide bandwidth (UWB) application is presented. By introducing multiple inverted L‐shaped stubs embedded within a polygonal shaped monopole antenna, multiple notches can be achieved. A prototype antenna with triple band‐notched at WiMAX, WLAN, and X‐band is designed and fabricated. The proposed antenna has an impedance bandwidth of 3–12 GHz with a voltage standing wave ratio of <2 except for the selected notched bands. The main advantage of the antenna is its miniaturised size (21 × 14 mm 2 ), as well as the straightforward design. The antenna has a unipolar configuration and good omnidirectional radiation pattern with negligible distortion which is suitable for UWB applications.
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Hosseini et al. (2018) studied this question.
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