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Research Article |

Design and Realization of Circular Polarized Dual Band Planar Antenna using Metamaterial Techniques for Wireless Communications

Author(s): Potnuru Narayanarao1, Karunakar Godi2

Published In : International Journal of Electrical and Electronics Research (IJEER)        Volume 14, Issue 2

Publisher : FOREX Publication

Published : 25 June 2026

e-ISSN : 2347-470X

Page(s) : 381-388

DOI: https://doi.org/10.37391/IJEER.140215

Abstract

This work introduces a novel dual-band circular polarized (CP) microstrip patch antenna for wireless communications. The antenna features a square patch with corner truncated and an etched rectangular slot for circular polarization. The geometric modifications are mainly to control resonating frequencies, bandwidth and to optimize the axial ratio (AR) at the resonating frequencies. The proposed dual-band CP metamaterial antenna is designed to function within the wireless frequency ranges i.e., 2.28-2.48 GHz and 4.48-4.64 GHz with a measured gains of 2.62 dBi and 2.8 dBi at 2.4 as well as 4.5 GHz respectively. The CP is achieved using truncated corners at opposite sides and a slot in the square patch to improve the AR bandwidth. The dimensions of the proposed dual band antenna are 50 × 50 × 1.6 mm³.The antenna is realized using a low-cost FR-4 laminate with a εr of 4.4 and a tanδ of 0.02. The experimental performance of modeled antenna closely matches with the simulation results and confirms the effectiveness of the design methodology. Comparative analysis further indicates that the proposed antenna achieves higher gain and occupies less physical area relative to similar designs reported in recent literature.

Keywords: Dual band, Metamaterial, Axial ratio, Circular polarization.




Potnuru Narayanarao, Department of ECE, Aditya Institute of Technology and Management, Tekkali, AP-532201, India; Email: narayana1student@gmail.com

Karunakar Godi, Department of ECE, GITAM (Deemed to be University), Visakhapatnam, AP-530045, India; Email: kgodi@gitam.edu

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Potnuru Narayanarao and Karunakar Godi (2026), Design and Realization of Circular Polarized Dual Band Planar Antenna using Metamaterial Techniques for Wireless Communications. IJEER 14(2), 381-388. DOI: 10.37391/IJEER.140215.