Title: A study on dual-sense broadband circularly polarised monopole antenna for UWB applications

Authors: Umesh Singh; Kalyan Mondal; Rajesh Mishra

Addresses: School of ICT Department, Gautam Buddha University (GBU), Greater Noida, Uttar Pradesh, India ' Electronics and Communication Engineering, National Institute of Technology Manipur, Imphal, Manipur, India ' School of ICT Department, Gautam Buddha University (GBU), Greater Noida, Uttar Pradesh, India

Abstract: The proposed work is designed with the embedded of stubs and Parasitic Strips (PSs) under the radiator. An FR4 substrate is used to design the antenna (ε_r = 4.4, h = 1.6 mm). The overall size of the antenna is 0.8 λ₀ × 0.75 λ₀ × 0.04 λ₀, where λ₀ is the free space wavelength at f₀ = 7.5 GHz. Two orthogonal modes are generated with the same magnitude and 90° phase difference over the frequency band. The stubs and strips are used to maintain the E_X and E_Y ratio for better Axial Ratio Bandwidth (ARBW). The measured impedance bandwidth of 7.74 GHz (3.9-11.64 GHz), 99.6%, two ARBW of 4.80 GHz (5.12-9.92 GHz), 63.83% and 0.75 GHz (11.1-11.85 GHz), 6.53% are achieved. The proposed antenna is preferred for the applications of 5.8 GHz ISM band, WiMAX (5.7-5.85 GHz), WLAN (5.2-5.8 GHz), Satellite (7.25-7.75 GHz, 7.9-8.4 GHz) and X-band (8-12 GHz).

Keywords: monopole; circular polarisation; dual-sense; stubs; ARBW; satellite.

DOI: 10.1504/IJWMC.2024.139622

International Journal of Wireless and Mobile Computing, 2024 Vol.27 No.1, pp.13 - 24

Received: 10 Nov 2021
Accepted: 11 Apr 2022
Published online: 05 Jul 2024 *

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