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Design and parametric analysis of a planar array antenna for circular polarization

Published online by Cambridge University Press:  18 March 2015

Muhammad Asad Rahman*
Affiliation:
Department of Electrical and Electronic Engineering, Chittagong University of Engineering and Technology, Chittagong-4349, Bangladesh. Phone: +880 1715 612240
Quazi Delwar Hossain
Affiliation:
Department of Electrical and Electronic Engineering, Chittagong University of Engineering and Technology, Chittagong-4349, Bangladesh. Phone: +880 1715 612240
Md. Azad Hossain
Affiliation:
Department of Electronic and Telecommunication Engineering, Chittagong University of Engineering and Technology, Chittagong-4349, Bangladesh
Eisuke Nishiyama
Affiliation:
Graduate School of Science and Engineering, Saga University, Saga 840-8502, Japan
Ichihiko Toyoda
Affiliation:
Graduate School of Science and Engineering, Saga University, Saga 840-8502, Japan
*
Corresponding author: M. A. Rahman Email: asad31@cuet.ac.bd

Abstract

A new circularly polarized planar array antenna using linearly polarized microstrip patches is designed and optimized for X-band wireless communication applications. Four square patch elements with feed network are used to design the circularly polarized array antenna. The feed network consists of microstrip lines on the obverse side of the dielectric substrate and slot line on the reverse side of the substrate. Both-sided MIC technology is successfully employed to apply its inherent advantages in the design process of the array structure. The unequal feed line is used to create 90° phase difference between the linearly polarized patches. Therefore, the circular polarization is realized by the combination of linearly polarized patches and unequal feed line. Characteristics of the proposed array are investigated by using two electromagnetic (EM) simulators: advanced design system and EMPro. The −10 dB impedance bandwidth of the antenna is around 5%. The 3 dB axial ratio bandwidth of 1.48% is obtained. The design of the proposed antenna along with parametric study is presented and discussed.

Type
Research Papers
Copyright
Copyright © Cambridge University Press and the European Microwave Association 2015 

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References

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