Vol. 118

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2022-01-31

Compact Ultrawideband Monopole Antenna with Continuously Tunable Notch Band Characteristics

By Nooshin Moradi, Farid Nazari, Hadi Aliakbarian, and Farhad Azadi Namin
Progress In Electromagnetics Research C, Vol. 118, 71-81, 2022
doi:10.2528/PIERC21120207

Abstract

In this work, a planar monopole ultrawideband (UWB) antenna with continuously tunable notch band feature is presented. The designed antenna, which has a compact size of 36.6×26×1 mm3, is fabricated on a low-cost FR4 substrate and comprises a circular radiating patch with four rectangular defects, a microstrip feed line, and a partial ground plane to cover the UWB frequency band extending from 3.1 GHz to 12.5 GHz. A semi-elliptical slot is etched out from the circular patch to create the first notch band at 3.6 GHz (WiMAX) in the UWB spectrum. The second notch band is created by embedding an annular slot on the circular patch loaded with a varactor diode to continuously tune the notch frequency from 5.6 GHz to 7.7 GHz in upper WLAN and X-band. To investigate the implementation feasibility of the designed UWB antenna, a prototype is fabricated and experimentally tested.

Citation


Nooshin Moradi, Farid Nazari, Hadi Aliakbarian, and Farhad Azadi Namin, "Compact Ultrawideband Monopole Antenna with Continuously Tunable Notch Band Characteristics," Progress In Electromagnetics Research C, Vol. 118, 71-81, 2022.
doi:10.2528/PIERC21120207
http://jpier.org/PIERC/pier.php?paper=21120207

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