CPW-fed circularly polarized dual band dual sense square slot monopole antenna

Authors

  • Reshmi Dhara National Institute of Technology Sikkim, India https://orcid.org/0000-0002-9790-6858
  • Vanka Janaki Rama Santhosh National Institute of Technology Sikkim, Ravangal, India https://orcid.org/0009-0001-4749-3573
  • Andi Vivek National Institute of Technology Sikkim, Ravangal, India
  • Gajendra Singh Shekhawat National Institute of Technology Sikkim, Ravangal, India
  • Sanoj Mahato National Institute of Technology Sikkim, Ravangal, India

DOI:

https://doi.org/10.3103/S0735272723110043

Keywords:

coplanar waveguide fed, CPW-fed, impedance bandwidth, axial ratio bandwidth, ARBW, IBW, left hand circular polarization, LHCP, right hand circular polarization, RHCP

Abstract

A circular polarized dual band dual sense coplanar waveguide (CPW)-fed square slot antenna is designed. The designed antenna consists of two parasitic patches. By varying the sizes of patches, good impedance matching can be achieved. In this antenna there are two impedance bandwidths (IBW) ranges from 2.65-5.43 GHz and 5.77-6.19 GHz and they are two axial ratio bandwidths (ARBW) ranges from  2.88-3.00 GHz and 4.98-5.35 GHz within the IBW. The dual impedance band designed antenna is meant to operate at resonant frequencies of 4.04GHz and 5.98 GHz. It generates a dual circular polarized band that operates at 2.94 and 5.2 GHz. They are left hand circular polarization (LHCP) and right hand circular polarization (RHCP). Low-cost FR4_epoxy is the substrate material used having a dielectric constant εr = 4.4. The antenna is designed using Ansoft HFSS software. The parameters like reflection coefficient, ARBW, gain, radiation pattern, and radiation efficiency have been measured, simulated and analyzed. The proposed antenna lower ARBW band can be suitable for some S-band wireless communication and a higher ARBW band can be suitable for WLAN applications.

Author Biography

Reshmi Dhara, National Institute of Technology Sikkim

Assistant Professor, Dept of Electronics and Communication Engineering

References

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Published

2024-08-17

Issue

Online first articles

Section

Research Articles