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A COMPACT DUAL BAND PLANAR RMSA FOR WLAN/WIMAX APPLICATIONS

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Author(s): C. R. Byrareddy | N. C. Easwar Reddy | C. S. Sridhar

Journal: International Journal of Advances in Engineering and Technology
ISSN 2231-1963

Volume: 2;
Issue: 1;
Start page: 98;
Date: 2012;
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Keywords: Rectangular Microstrip Antenna (RMSA) | Wireless Local Area Network (WLAN) | WiMAX | Strips | monopole dual band

ABSTRACT
Presentation of a compact dual band planar rectangular microstrip antenna (RMSA) antenna for a WLAN (2.4GHz IEEE standards 802.11b/g)/WiMAX(2.6GHz IEEE standards802.16e)applications. The two resonant modes of the presented RMSA antenna are associated with various length and width of the planar strips in which a centre strip contributes for the lower resonant frequency 2.4GHz(2.26-2.4GHz with impedance bandwidth 240MHz) and two lateral strips contributes for the higher resonant frequency2.8GHz(2.73-2.95GHz with impedance bandwidth220MHz). By proper adjustment of the coupling between the two lateral strips and embedded centre strip enables the operation of dual band with a -10dB return loss, a near directive radiation pattern and a good antenna gain with sufficient bandwidth. The antenna is simulated using Ansoft HFSS and fabricated on an FR4 substrate with dielectric constant 4.4 and thickness 1.6mm occupies an area of 65mm x50mm.The simulation results are found to be in good agreement with the measured results. The proposed antenna is suitable for wireless communication applications requiring a small antenna.
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