Printed ultra-wideband monopole U-slotted antenna for triple band-rejection

Neelaveni Ammal Murugan, Ramachandran Balasubramanian and Hanumantha Rao Patnam

Journal of Electromagnetic Waves and Applications, 2016, vol. 30, issue 12, 1532-1544

Abstract: A low-profile microstrip-fed planar monopole ultra-wideband (UWB) antenna with triple band rejection characteristics is proposed. The proposed antenna configuration consists of a bevelled ground with multiple U-slots embedded on the radiation patch for realizing the band notch characteristics. The notched frequency bands can be controlled by adjusting the parameters of the slots. The measured results demonstrate that the fabricated antenna exhibits an impedance bandwidth from 3 to 11 GHz for a VSWR ˂ 2 with three rejection bands at 3.38‒3.73 GHz for WiMAX, 5.12‒5.84 GHz for WLAN and 7.23‒8.56 GHz for X-band satellite communication services. Band rejection function is confirmed by the three gain diminishes occurring at 3.7, 5.35, and 8 GHz and stable gain outside the rejection bands. Measured group delay ensures that the designed antenna has good transmission capability of UWB signal with minimum distortion.

Date: 2016
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DOI: 10.1080/09205071.2016.1202782

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