<abstract xmlns="http://www.w3.org/1999/xhtml">

<p>The article proposes design investigation and experimental results of a coplanar waveguide (CPW) fed square slot antenna that gives wideband circular polarization. This circular polarization characteristic is achieved by embedding a square shape stub to left bottom corner and an L-shaped strip to the right upper corner of the slot. A high impedance bandwidth of 87.8 % (3.6–9.0 GHz), a wide axial ratio bandwidth of 73.05 % (4.2–9.0 GHz) and wide 3-dB axial ratio beamwidth of 90° in the entire frequency range of interest are achieved with this antenna structure. To improve the 3-dB axial ratio bandwidth, three slots (two horizontal and one vertical) are scratched at the exterior periphery of the ground plane. These perturbation assemblies are accountable to excite orthogonal modes and help increase an axial ratio bandwidth. The designed antenna displays the constant and steady radiation patterns in the complete frequency range of concern. The overall dimension of the presented compact antenna is 0.24λ × 0.24λ × 0.01λ.</p>
</abstract>

The article proposes design investigation and experimental results of a coplanar waveguide (CPW) fed square slot antenna that gives wideband circular polarization. This circular polarization characteristic is achieved by embedding a square shape stub to left bottom corner and an L-shaped strip to the right upper corner of the slot. A high impedance bandwidth of 87.8 % (3.6–9.0 GHz), a wide axial ratio bandwidth of 73.05 % (4.2–9.0 GHz) and wide 3-dB axial ratio beamwidth of 90° in the entire frequency range of interest are achieved with this antenna structure. To improve the 3-dB axial ratio bandwidth, three slots (two horizontal and one vertical) are scratched at the exterior periphery of the ground plane. These perturbation assemblies are accountable to excite orthogonal modes and help increase an axial ratio bandwidth. The designed antenna displays the constant and steady radiation patterns in the complete frequency range of concern. The overall dimension of the presented compact antenna is 0.24λ × 0.24λ × 0.01λ.

Square Slot Antenna for Wide Circularly Polarized Bandwidth and Axial Ratio Beamwidth

Assistant Professor, Department of Physics

Assistant Professor, Department of Electronics & Communication Engineering, School of Electrical, Electronics & Communication Engineering

Electrical, Control and Communication Engineering

This work is licensed under the Creative Commons Attribution 4.0 International License.

The article proposes design investigation and experimental results of a coplanar waveguide (CPW) fed square slot antenna that gives wideband circular...

Square Slot Antenna for Wide Circularly Polarized Bandwidth and Axial Ratio Beamwidth

Published Online: Sep 13, 2021

Page range: 1 - 11

DOI: https://doi.org/10.2478/ecce-2021-0001

Keywords
Antenna radiation patterns, Gain, Slot antenna, Wideband, Wireless communication

© 2021 Vijay Sharma et al., published by Sciendo

This work is licensed under the Creative Commons Attribution 4.0 International License.

Square Slot Antenna for Wide Circularly Polarized Bandwidth and Axial Ratio Beamwidth

Published Online: Sep 13, 2021

Page range: 1 - 11

DOI: https://doi.org/10.2478/ecce-2021-0001

KeywordsAntenna radiation patterns, Gain, Slot antenna, Wideband, Wireless communication

© 2021 Vijay Sharma et al., published by Sciendo

This work is licensed under the Creative Commons Attribution 4.0 International License.

Keywords
Antenna radiation patterns, Gain, Slot antenna, Wideband, Wireless communication