Compact CPW-fed tri-band antenna with a defected ground structure for GSM, WLAN and WiMAX applications

Authors

DOI:

https://doi.org/10.3103/S0735272716070050

Keywords:

DGS, FSS, CPW, FR-4, GSM, WLAN, WiMAX, coplanar waveguide feeding, frequency shifting strips, defected ground structure, tri-band antenna

Abstract

In this paper we propose and investigate a unique compact FR4 based CPW-fed tri-band antenna for wireless applications. The antenna comprises frequency shifting strips and a defected ground structure (formed by combining of metallic strips and cutting of an L-shaped slot from the ground). The proposed antenna provides three different impedance bandwidths of 0.57, 0.98 and 1.59 GHz which are sufficient to cover the frequency band of GSM 1800/1900, WLAN 5.5/5.8 GHz and WiMAX applications. The developed antenna has a size of 17ґ20 mm and operates over frequency ranges 1.50–2.08, 5.25–6.23 and 9.10–10.69 GHz centered at 1.702, 5.802 and 10.102 GHz, respectively. The antenna was designed and simulated using Ansoft HFSS software. The antenna’s characteristics such as reflection coefficient, radiation pattern, impedance bandwidth and VSWR are presented.

Author Biographies

Janmoni Borah, North Eastern Regional Institute of Science and Technology, Nirjuli

PhD Scholar, ECE

Tasher Ali Sheikh, North Eastern Regional Institute of Science and Technology, Nirjuli

PhD Scholar, ECE

Sahadev Roy, National Institute of Technology, Arunachal Pradesh

Assistant Professor, Dept. of ECE

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Published

2016-07-17

Issue

Vol. 59 No. 7 (2016)

Section

Research Articles