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A low-profile circularly polarized microstrip antenna using elliptical electromagnetic band gap structure

Published online by Cambridge University Press:  28 September 2021

Shilpee Patil Open the ORCID record for Shilpee Patil [Opens in a new window] ,
Alka Verma Open the ORCID record for Alka Verma [Opens in a new window] ,
Anil Kumar Singh ,
Binod Kumar Kanaujia  and
Suresh Kumar
Shilpee Patil
Affiliation:
Department of Electronics and Communication Engineering, Noida Institute of Engineering and Technology, Greater Noida, Uttar Pradesh, India
Alka Verma*
Affiliation:
Electronics Engineering, A.K.T.U., Lucknow, Uttar Pradesh, India
Anil Kumar Singh
Affiliation:
Department of Electronics and Instrumentation Engineering, F.E.T., M.J.P. Rohilkhand University, Bareilly, Uttar Pradesh 243006, India
Binod Kumar Kanaujia
Affiliation:
School of Computational and Integrative Sciences, Jawaharlal Nehru University, New Delhi, India
Suresh Kumar
Affiliation:
Department of Computer Science and Engineering, Netaji Subhas University of Technology, East Campus, Delhi, India
*
Author for correspondence: Alka Verma, E-mail: alkasinghmail@rediffmail.com
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Abstract

This study investigates a low-profile circularly polarized (CP) antenna using coplanar waveguide feeding. Rectangular-shaped slots and an inverted L-shaped slit are entrenched into the ground plane to enhance the impedance bandwidth of the antenna. Furthermore, the antenna is implemented with six elliptical electromagnetic band gap structures on its substrate to enhance the −10 dB return loss bandwidth and also to generate CP waves. The experimental and theoretical results closely match each other and indicate that a simple and compact design antenna with dimensions of 0.317λ0 × 0.317λ0 × 0.023λ0(λ0 is the operating wavelength at 4.74 GHz in free space) achieves 36.9% (3.91–5.68 GHz) of the −10 dB return loss bandwidth and 9.98% (4.09–4.52 GHz) of the 3-dB axial ratio bandwidth, thus making it a favorable entrant for radio altimeter and wireless avionics infra-communication systems.

Keywords

Axial ratiobandwidthelliptical electromagnetic band gap structureslot
Type
Antenna Design, Modelling and Measurements
Information
International Journal of Microwave and Wireless Technologies , Volume 14 , Issue 8 , October 2022 , pp. 1009 - 1018
Copyright
Copyright © The Author(s), 2021. Published by Cambridge University Press in association with the European Microwave Association

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