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Triple band circularly polarized compact microstrip antenna with defected ground structure for wireless applications

Published online by Cambridge University Press:  12 March 2015

Mukesh Kumar Khandelwal ,
Binod Kumar Kanaujia ,
Santanu Dwari ,
Sachin Kumar  and
Anil Kumar Gautam
Mukesh Kumar Khandelwal
Affiliation:
Department of Electronics Engineering, I.S.M, Dhanbad-826004, India. Phone: +91 11 22048047
Binod Kumar Kanaujia*
Affiliation:
Department of Electronics and Communication Engineering, Ambedkar Institute of Advanced Communication Technologies and Research, Delhi-110031, India
Santanu Dwari
Affiliation:
Department of Electronics Engineering, I.S.M, Dhanbad-826004, India. Phone: +91 11 22048047
Sachin Kumar
Affiliation:
Department of Electronics and Communication Engineering, Ambedkar Institute of Advanced Communication Technologies and Research, Delhi-110031, India
Anil Kumar Gautam
Affiliation:
Department of Electronics and Communication Engineering, G. B. Pant Engineering College, Pauri Garhwal, Uttarakhand-246194, India
*
Corresponding author: B. K. Kanaujia Email: [email protected]
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Abstract

Asymmetric slits loaded irregular shaped microstrip patch antenna with three different ground structures is proposed. All three antennas show triple band characteristics. First antenna with regular ground plane resonates at 1.95, 2.4, and 4.90 GHz with good radiation characteristics and shows right-hand circular polarization at 1.95 GHz. 18.75% of compactness is achieved with triple band characteristics. Further, same patch is used with different defected ground structures. Second antenna resonates at 1.85, 2.4, and 4.85 GHz with suppressed cross-polarization level and antenna shows right-hand circular polarization at 1.85 and 4.85 GHz. Compactness is further improved to the value of 22.91%. The third antenna resonates at 1.95, 2.4, and 4.85 GHz with better gain and radiation characteristics and antenna shows right-hand circular polarization at 1.95 and 2.4 GHz. The small frequency ratio f2/f1 is achieved and the value of f2/f1 is 1.29 and 1.23 for second and third configuration, respectively. Proposed structures show right-hand circularly polarized with suppressed left-hand circularly polarized radiations and suitable for fixed mobile wireless communication applications. All structures are analyzed using Ansoft HFSS v.14 based on finite element method and measured results satisfy the simulated results.

Keywords

Triple bandCircular polarizationDefected ground structureMicrostrip patch antenna
Type
Research Papers
Information
International Journal of Microwave and Wireless Technologies , Volume 8 , Special Issue 6: Signal Processing Symposium 2015 , September 2016 , pp. 943 - 953
Copyright
Copyright © Cambridge University Press and the European Microwave Association 2015 

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