A critical review on the development of multi-geometrical stacked wideband dielectric resonator antenna

• Published in: Alexandria engineering journal Vol. 100; pp. 111 - 141
• Main Authors: Omar, Mohamad Faiz Mohamed, Zubir, Ihsan Ahmad, Kamal, Shahanawaz, Rajendran, Jagadheswaran A.L., Mohamed, Julie Juliewatty, Ahmad, Zainal Arifin, Ain, Mohd Fadzil, Rahim, Sharul Kamal Abdul
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01-08-2024; Elsevier
• Subjects: Dielectric resonator geometries; Hybrid dielectric resonator; Perforated structure; Wideband; Perforated structure; Hybrid dielectric resonator; Wideband; Dielectric resonator geometries
• ISSN: 1110-0168
• DOI: 10.1016/j.aej.2024.05.028

Dielectric resonator antennas (DRAs) use dielectric material as a resonator to accomplish high radiation efficiency and avoid severe conductor loss. The dielectric material that behaves as a resonator is plagued by a number of limitations, including strong cross-polarised (XP) radiation and difficulties integrating with any development platform. Yet, it also offers a lot of benefits, including compact size, lightweight, affordable price, and diversity in form, including cylindrical, rectangular, conical, and ring. A discussion of DRAs, covering DRA propagation modes, geometries, feeding mechanisms, and different bandwidth augmentation approaches, is presented. A stacked arrangement with two or more DRs has achieved the widest impedance bandwidth (BW). The perforated topology is a straightforward alternative for increasing the DRA’s bandwidth while maintaining a small, discrete size.