Open Access

ARTICLE

Super Compact UWB Monopole Antenna for Small IoT Devices

by Ahmed Jamal Abdullah Al-Gburi¹, Zahriladha Zakaria^1,*, Merih Palandoken², Imran Mohd Ibrahim¹, A. A. Althuwayb³, Sarosh Ahmad⁴, Samir Salem Al-Bawri⁵

1 Department of Electronics and Computer Engineering (FKEKK), Center for Telecommunication Research and Innovation (CeTRI), Universiti Teknikal Malaysia Melaka (UTeM), Durian Tungal, 76100, Malaysia
2 Department of Electrical and Electronics Engineering, Izmir Katip Celebi University, Izmir, 35620, Turkey
3 Electrical Engineering Department, Jouf University, Sakaka, 72388, Aljouf, Kingdom of Saudi Arabia
4 Universidad Carloa III de Madrid, Leganes, 28911, Madrid, Spain
5 Space Science Centre, Climate Change Institute, Universiti Kebangsaan Malaysia (UKM), Bangi, 43600, Malaysia

* Corresponding Author: Zahriladha Zakaria. Email:

Computers, Materials & Continua 2022, 73(2), 2785-2799. https://doi.org/10.32604/cmc.2022.028074

Received 01 February 2022; Accepted 06 April 2022; Issue published 16 June 2022

Abstract

This article introduces a novel, ultrawideband (UWB) planar monopole antenna printed on Roger RT/5880 substrate in a compact size for small Internet of Things (IoT) applications. The total electrical dimensions of the proposed compact UWB antenna are 0.19 λ_o × 0.215 λ_o × 0.0196 λ_o with the overall physical sizes of 15 mm × 17 mm × 1.548 mm at the lower resonance frequency of 3.8 GHz. The planar monopole antenna is fed through the linearly tapered microstrip line on a partially structured ground plane to achieve optimum impedance matching for UWB operation. The proposed compact UWB antenna has an operation bandwidth of 9.53 GHz from 3.026 GHz up to 12.556 GHz at −10 dB return loss with a fractional bandwidth (FBW) of about 122%. The numerically computed and experimentally measured results agree well in between. A detailed time-domain analysis is additionally accomplished to verify the radiation efficiency of the proposed antenna design for the ultra-wideband signal propagation. The fabricated prototype of a compact UWB antenna exhibits an omnidirectional radiation pattern with the low peak measured gain required of 2.55 dBi at 10 GHz and promising radiation efficiency of 90%. The proposed compact planar antenna has technical potential to be utilized in UWB and IoT applications.

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Keywords

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