Abstract
A hexagonal shaped repeated loop structure with reconfigurable ground stub technique is proposed for ultra-wideband (UWB) application. Effects of repeated loops in the fractal structure and position of reconfigurable ground stub are optimized for ultra-wideband characteristics with better performance of the antenna. Two PIN diodes are used in the ground stub to achieve reconfigurability. The proposed fractal antenna is designed with FR4 substrate with an overall dimension of 40×44×1.6 mm3. The design shows frequency reconfiguration from Ultra-wideband characteristics to multiband for different possible switching conditions. The entire design is carried out in CST 2018 environment and the simulated results show that the proposed design is suitable for sub 6GHz wireless LAN, Bluetooth, WiMAX and other wireless applications.
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