A Switchable Quadri-Polarized Dielectric Resonator Antenna

Document Type : Research Paper

Authors

1 Department of Civil Engineering, Cha.C., IslamicAzad University, Chalous, Iran.

2 Department of Electrical and Computer Engineering, University of Tabriz, Tabriz, Iran

Abstract

In this work, a switchable quadri-polarized dielectric resonator antenna (DRA) is presented, capable of supporting four distinct polarization states: vertical linear polarization (VLP), horizontal linear polarization (HLP), left-handed circular polarization (LHCP), and right-handed circular polarization (RHCP). This feature enables the antenna to cater to polarization diversity, which is a critical requirement in modern wireless communication systems for enhancing signal reliability, reducing multipath fading, and improving overall system performance. The polarization switching mechanism is achieved using a simple yet effective microstrip feed line integrated with two pin diodes, which serve as control elements to dynamically reconfigure the antenna's polarization. This eliminates the need for complex feeding networks or mechanical rotation, making the design compact and easy to integrate into existing systems. The proposed DRA exhibits an impedance bandwidth of approximately 19.25%, a peak gain of about 7.73 dBi, and an axial ratio bandwidth close to 5%, ensuring efficient radiation performance across the operational band. These characteristics make it a promising candidate for applications such as 5G, IoT, and satellite communication systems.

Keywords

Journal of Communication Engineering

Articles in Press, Accepted Manuscript
Available Online from 25 August 2025

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