Controllable notched edge tapered rectangular patch antenna using U-slot line feed and DGS for UWB applications
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Date
2019-08
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G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand)
Abstract
Antenna is an extremely indispensible part of wireless communication systems. As the requirements of wireless devices increasing day by day like Bluetooth devices, radio frequency devices and size of such devices decreasing accordingly. To meet the requirement of small size devices, antenna need to be compact and single antenna can be used for several wireless applications, without affecting the antenna parameters. Therefore the concept of ultra-wideband is used. The defected ground structure and slotting is used to enhance the performance of antenna. Proposed antenna is designed in the substrate size of 35×30 with height of 1.6mm. FR-4 epoxy substrate having permittivity of 4.4 and loss tangent of .02 is used. Ground size is reduced to obtain monopole antenna and slots are cut on both patch as well as ground plane to improve the performance of antenna in terms of bandwidth and gain. Proposed antenna is simulated using Ansoft HFSS software, fabricated in PCB designing machine and tested using VNA. Proposed antenna resonates in 3.1-14.45GHz band with notched frequency bands from 3.31-3.6GHz (WiMAX) and 4.4-5.8GHz (WLAN) with the bandwidth of 11.35 GHz having gain above 2.17dB and efficiency 80-90% throughout the entire frequency range. Proposed antenna has applications in UWB frequency range with no interference for WiMAX and WLAN band in wireless communication.
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