Open Access

ARTICLE

Triple-Band Circularly Polarized Dielectric Resonator Antenna (DRA) for Wireless Applications

Azuwa Ali¹, Mohd Najib Mohd Yasin^2,*, Ismahayati Adam², Ali H. Rambe³, Mohd Haizal Jamaludin⁴, Hasliza A Rahim², Corhan Cengiz⁵, Mohd Ibrahim Shapiai Abd. Razak⁶
1 Advanced Communication Engineering (ACE) Centre of Excellence, Faculty Technology of Electrical Engineering, Universiti Malaysia Perlis, Pauh, Perlis, 02600, Malaysia
2 Advanced Communication Engineering (ACE) Centre of Excellence, Faculty Technology of Electronic Engineering, Universiti Malaysia Perlis, Pauh, Perlis, 02600, Malaysia
3 Department of Electrical Engineering, Universitas Sumatera Utara, Medan, 20155, Indonesia
4 Wireless Communication Center, Universiti Teknologi Malaysia, Skudai, 81310, Johor, Malaysia
5 Korhan Cengiz College of Information Technology, University of Fujairah, Fujairah, 00000, United Arab Emirates
6 Malaysia-Japan International Institute of Technology (M-JIIT), Universiti Teknologi Malaysia, Kuala Lumpur, 54100, Malaysia
* Corresponding Author: Mohd Najib Mohd Yasin. Email:

Computers, Materials & Continua 2023, 74(1), 313-325. https://doi.org/10.32604/cmc.2023.031706

Received 25 April 2022; Accepted 15 June 2022; Issue published 22 September 2022

Abstract

This paper proposes a new dielectric resonator antenna (DRA) design that can generate circularly polarized (CP) triple-band signals. A triple-band CP DRA antenna fed by a probe feed system is achieved with metal strips structure on side of DRA structure. The design start with conventional rectangular DRA with F shaped metal strips on DRA structure alongside the feed. Then, the F metal strip is enhanced by extending the length of the metal strip to obtain wider impedance bandwidth. Further improvement on the antenna performance is observed by improvised the conventional DRA structure. The method of removing part of DRA bottom resulted to higher antenna gain with triple band CP. The primary features of the proposed DRA include wide impedance matching bandwidth (BW) and broadband circular polarization (CP). The primary features of the proposed DRA include wide impedance matching bandwidth (BW) and broadband circular polarization (CP). The CP BW values recorded by the proposed antenna were ∼ 11.27% (3.3–3.65 GHz), 12.18% (4.17–4.69 GHz), and 1.74% (6.44–6.55 GHz) for impedance-matching BW values of 35.4% (3.3–4.69 GHz), 1.74% (5.36–5.44 GHz), and 1.85% (6.41–6.55 GHz) with peak gains of 6.8 dBic, 7.6 dBic, and 8.5 dBic, respectively, in the lower, central, and upper bands. The prototype of the proposed antenna geometry was fabricated and measured. A good agreement was noted between the simulated and the measured results.

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Keywords

Dielectric resonator antenna (DRA); circularly polarized (CP); parasitic element; radiating element

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