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Research Article |

Fractal Cross-Slot-Coupled Antenna with Dielectric Resonator Elements having Circular Polarization

Author(s): Pedada Krishna Rao*, M. Satya Anuradha and V. Rajya Lakshmi,

Published In : International Journal of Electrical and Electronics Research (IJEER)        Volume 11, Special Issue on NGWCN

Publisher : FOREX Publication

Published : 30 December 2023

e-ISSN : 2347-470X

Page(s) : 25-32

DOI: https://doi.org/10.37391/ijeer.11ngwcn05

Abstract

This article presents the design and analysis of an “ultra-wideband (UWB)” Fractal Cross-slot-Coupled Antenna with “Dielectric Resonator Elements (DREs)” exhibiting circular polarization and band-notched characteristics. The proposed antenna aims to reject the frequency range of 5.1 GHz to 5.9 GHz while maintaining high impedance bandwidth and radiation efficiency. A coplanar waveguide feeds the planar UWB antenna, featuring a narrow slot on the radiating element and a dielectric resonator mounted on top. Simulation results demonstrate excellent performance in terms of impedance bandwidth and radiation efficiency. To further improve the design for wireless applications, Fractal-slot-aperture coupled DRE antennas are employed. The proposed configuration takes into account the radiative efficiency and concomitant excitation of the rectangular DRE by a “Circularly Polarized Dielectric Resonator Antenna (CPDRA)” coupled through a fractal cross-slot. By appropriately adjusting the fractal cross-slot size, a wider “axial ratio (AR)” bandwidth is achieved through the combination of its resonance with the dielectric resonator. The antenna is designed utilizing the proposed fractal cross-slot-coupled CPDRA, with its architecture and efficiencies thoroughly investigated. The performance of the proposed antenna demonstrates its potential for various wireless communication applications, highlighting the advantages of integrating Fractal Cross-slot-coupled DREs in antenna design.

Keywords: Ultra-wideband, Circular polarization, Fractal cross-slot, Micro-strip antenna, Return-loss, Radiation pattern, Axial-ratio.




Pedada Krishna Rao*, Research Scholar, Department of ECE, Andhra University, Visakhapatnam, India; Email: krishnapedada.r@gmail.com

M. Satya Anuradha, Professor, Department of ECE, Andhra University, Visakhapatnam, India; Email: satyaanuradham@gmail.com

V. Rajya Lakshmi, Professor, Department of ECE, ANITS, Visakhapatnam, India; Email: rajyalakshmiv87@gmail.com

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Pedada Krishna Rao, M. Satya Anuradha, and V. Rajya Lakshmi (2023), Fractal Cross-Slot-Coupled Antenna with Dielectric Resonator Elements having Circular Polarization. IJEER 11(ngwcn), 25-32. DOI: 10.37391/ijeer.11ngwcn05.