Abstract
This paper presents a novel Multiple Input Multiple Output (MIMO) circularly polarized stacked Cylindrical Dielectric Resonant Antenna design integrated with graphene and polarization switching, propelling significant advancements in THz wireless communication. The proposed antenna achieved a wideband Impedance bandwidth of 3.12 THz, complemented by an overlapping Axial Ratio (AR) bandwidth (ARBW) of 2.01 THz, respectively. The antenna incorporates a new Defected Ground Structure to generate a wideband frequency response. The integration of graphene on top of the DRAs further enhances the antenna's performance, significantly boosting gain and radiation efficiency. A standout feature of this antenna is its seamless switching capability between Left-Hand Circular Polarization and Right-Hand Circular Polarization, making it highly adaptable for diverse communication scenarios. Additionally, the resonant frequency of the antenna can be precisely tuned by varying the graphene chemical potential (µc), offering enhanced flexibility. The paper also investigates a 2 × 2 MIMO configuration with excellent performance parameters, showcasing its suitability for THz wireless communication. Furthermore, the proposed antenna exhibits very high isolation between the ports by varying µc. The key features of the antenna include wideband frequency response and AR response, polarization switching, tuning of resonant frequency, high gain, and high efficiency. These advantages mark a significant milestone in THz wireless communication, setting new benchmarks for efficiency, adaptability, and overall performance in this rapidly evolving field.
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Upender, P. Graphene-infused multi-port circularly polarized dielectric resonator antenna with polarization switching. Opt Quant Electron 56, 876 (2024). https://doi.org/10.1007/s11082-024-06801-0
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DOI: https://doi.org/10.1007/s11082-024-06801-0