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CPW fed rectangular rings-based patch antenna with DGS for WLAN/UNII applications

Published online by Cambridge University Press:  21 February 2019

Geetanjali Singla ,
Rajesh Khanna  and
Davinder Parkash
Geetanjali Singla*
Affiliation:
Department of Electronics and Communication Engineering, Thapar University, Patiala, Punjab, India
Rajesh Khanna
Affiliation:
Department of Electronics and Communication Engineering, Thapar University, Punjab, India
Davinder Parkash
Affiliation:
Department of Electronics and Communication Engineering, University Institute of Engineering, Chandigarh University, Ghauran, Punjab, India
*
Author for correspondence: Geetanjali Singla, E-mail: geetanjalikapur@rediffmail.com
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Abstract

The spectral congestion in existing Industrial, Scientific, and Medical (ISM) Wireless Local Area Network (WLAN) bands has led to the emergence of new ISM bands (Unlicensed National Information Infrastructure (UNII)) from 5.150 to 5.710 GHz. In this paper, a simple uniplanar, high gain, microstrip antenna is designed, fabricated, and tested for existing WLAN and new UNII standards. The proposed antenna provides dualband operation by joining two rectangular rings and cutting Defected Ground Structure in the Coplanar Wave Guide (CPW) feed. The experimental and simulation results show good return loss characteristics and stable radiation pattern over the desired frequency bands ranging from 2.20 to 2.65 GHz (WLAN band) at a lower frequency and from 5.0 to 5.45 GHz (UNII-1/UNII-2 bands). The measured peak gains are 5.5 and 4.9 dBi at 2.45 GHz (WLAN band) and 5.15 GHz (UNII band), respectively.

Keywords

Defected Ground StructureWLANUNIICPW feed
Type
Research Papers
Information
International Journal of Microwave and Wireless Technologies , Volume 11 , Special Issue 5-6: EuMW 2018 Special Issue (Part I) , June 2019 , pp. 523 - 531
Copyright
Copyright © Cambridge University Press and the European Microwave Association 2019 

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