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A high gain wideband circularly polarized microstrip antenna

Part of: EuMW Special issue 2019

Published online by Cambridge University Press:  04 February 2020

Arun Kumar ,
Santanu Dwari ,
Ganga Prasad Pandey ,
Binod Kumar Kanaujia Open the ORCID record for Binod Kumar Kanaujia [Opens in a new window]  and
Dinesh Kumar Singh Open the ORCID record for Dinesh Kumar Singh [Opens in a new window]
Arun Kumar
Affiliation:
Department of Electronics Engineering, Indian Institute of Technology (Indian School of Mines), Dhanbad, Jharkhand826004, India
Santanu Dwari
Affiliation:
Department of Electronics Engineering, Indian Institute of Technology (Indian School of Mines), Dhanbad, Jharkhand826004, India
Ganga Prasad Pandey
Affiliation:
Department of Information and Communication Technology, School of Technology, Pandit Deendayal Petroleum University, Gandhi Nagar, Gujarat382421, India
Binod Kumar Kanaujia
Affiliation:
School of Computational and Integrative Sciences, Jawaharlal Nehru University, New Delhi110067, India
Dinesh Kumar Singh*
Affiliation:
Department of Electronics and Communication Engineering, G L Bajaj Institute of Technology and Management, Greater Noida201306, India
*
Author for correspondence: Dinesh Kumar Singh, E-mail: dinesh12dk@gmail.com
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Abstract

In this paper, a high gain wideband circularly polarized (CP) microstrip antenna is presented for broadband operation. The proposed structure comprised of a partially grounded printed monopole antenna loaded with a split ring resonator and a metallic reflector. By using the metallic reflector surface underneath the patch radiator results in the reflected waves in the same phase with main lobe radiation, thereby improving the gain and it also acts like a secondary radiator to generate wideband CP behavior in the proposed design. A gain enhancement of 4.3 dBi is achieved in the operating frequency band as compared with the design without a metallic reflector. The maximum gain achieved in the presented method is 8.6 dBic over the entire operating range. The proposed design shows a wideband behavior ranging from 4.30 to 9.10 GHz with the 10-dB impedance bandwidth of 71.64%. In addition, the proposed design yielded a broadside right hand CP radiation with a 3-dB axial ratio bandwidth of 33.88% from 4.98 to 7.01 GHz. The proposed antenna is fabricated and experimental results on reflection coefficient, gain, axial ratio, and radiation patterns concede well with simulation results.

Keywords

Microstrip antennawidebandhigh gaincircular polarizationmetallic reflector
Type
Antenna Design, Modelling and Measurements
Information
International Journal of Microwave and Wireless Technologies , Volume 12 , Special Issue 7: EuMW 2019 Special Issue , September 2020 , pp. 678 - 687
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Copyright
Copyright © Cambridge University Press and the European Microwave Association 2020

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