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A multilayer dual wideband circularly polarized microstrip antenna with DGS for WLAN/Bluetooth/ZigBee/Wi-Max/ IMT band applications

Published online by Cambridge University Press:  25 August 2015

Amanpreet Kaur ,
Rajesh Khanna Open the ORCID record for Rajesh Khanna [Opens in a new window]  and
Machavaram Kartikeyan
Amanpreet Kaur*
Affiliation:
Department of Electronics and Communication Engineering, Thapar University, Patiala 147004, India. Phone: +919815601313
Rajesh Khanna
Affiliation:
Department of Electronics and Communication Engineering, Thapar University, Patiala 147004, India. Phone: +919815601313
Machavaram Kartikeyan
Affiliation:
Millimeter/THz Wave Laboratory, Department of Electronics and Computer Engineering, Indian Institute of Technology Roorkee, Roorke 247667, India
*
Corresponding author: A. Kaur Email: [email protected]
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Abstract

In this paper, a three layered stacked circularly polarized rectangular dual band microstrip antenna with a defected ground structure (DGS) and a feed network with stub (showing dual wideband characteristic) is designed, fabricated, and tested for WLAN, Zig bee, Wi-Max, and IMT band applications. The proposed antenna is fabricated on an FR4 substrate with dielectric constant (εr) of 4.4; tanδ of 0.0024 and a height of 1.57 mm.The antenna has a surface area of 4.8 × 4.1 cm2 and a total height of 5.1 mm. The designed antenna covers two wireless bands from 2.39 to 2.64GHz and 3.39–3.76 GHZ with impedance bandwidths (VSWR < 2) of 250 MHz (9% bandwidth centered at 2.515 GHz) and 370 MHz (10% bandwidth centered at 3.57 GHz), respectively. This antenna is capable of covering IEEE 802.11b/g/n standards of WLAN from 2.4 to 2.485 GHz, bluetooth applications from 2.4 to 2.483 GHz, ZigBee applications from 2.4 to 2.485 GHz, IEEE 802.16/ Wi-MaX applications from 3.4 to 3.69 GHz and international mobile telecommunications (IMT) band from 3.4 to 3.6 GHz. As the antenna is circularly polarized, the misalignment of the receiver with transmitter does not affect the performance of the system. The antenna designing was done using CST MWS V'10 and the prototype of the designed antenna was tested for the validation of S11 (dB) and gain results against the simulated ones experimentally. The proposed antenna shows a gain of 4.08 dBi at 2.5 GHz and a gain of 5.024 dBi at 3.51 GHz.

Keywords

Stacked Aperture coupled MSADGSWLANBluetoothZigBeeWiMaXIMTReturn lossCircular polarizationImpedance bandwidthRadiation pattern
Type
Research Papers
Information
International Journal of Microwave and Wireless Technologies , Volume 9 , Issue 2 , March 2017 , pp. 317 - 325
Copyright
Copyright © Cambridge University Press and the European Microwave Association 2015 

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References

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