Compact multiband monopole antenna for wireless applications
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Date
2013-07
Authors
Raghuvanshi, Anoop
Journal Title
Journal ISSN
Volume Title
Publisher
G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand)
Abstract
In modern wireless communication there is a huge demand of an antenna which will operate for a wide band of frequency and can simultaneously handle various wireless services. Monopole microstrip patch antennas present really appealing features like simple structure, small size and low cost. They offer a wide band of frequency and hence a prominent option for the proposed antenna designing. The structural configuration of the proposed monopole antenna design has an F-shaped slot on one side of the ground plane and a pair of rectangular and circular slot on the upper patch. The antenna is made on RT/Duroid 5880 substrate with a dielectric constant of 2.2, loss tangent of 0.0009 and a height of the substrate is only 1 mm. The actual size of the proposed antenna is only 20 ×24 ×1 mm3 and it is feed by a coaxial probe feed. After simulation three bands with a centre frequency of 3.44 GHz, 5.28 GHz and 7.12 GHz are obtained. The return loss at these resonant frequencies is -32 dB, 24 dB, and -20 dB which show a very good impedance matching. The proposed design overcomes the narrowband limitation of the patch antenna by offering a wide bandwidth of 172, 1758 and 601 MHz with an efficiency of 86%, 85% and 78%. The proposed antenna has been designed and simulated by using IE3D software and Transmission Line Model in the frequency range of 2 to 8 GHz. The performance parameters of compact multiband monopole antenna for wireless applications are improved as compared with the quoted reference antenna. The wireless applications supported by the proposed compact multiband monopole antenna are WLAN 5.8 (5.725-5.825 GHz), WiMAX 5.5 (5.25-5.85 GHz), Wi-Fi (5-6 GHz), HIPERLAN/2 (5.725-5.825 GHz), Cordless phones (5 GHz), IMT (4.4-4.9 GHz), Fixed wireless (5 GHz).