Swarup Das, S. Bhattacharjee, S. R. Bhadra Chaudhuri
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Fractal Loaded Hexagonal Wide Slot Antenna for Super Wide Band Application
In this paper a combination of rectangular and staircase fractal curves are applied on a regular hexagonal wide slot antenna to achieve Super Wide Band (SWB) operation. The antenna is fed by a simple microstrip line along with a regular hexagonal tuning stub. The proposed antenna achieves a ratio impedance bandwidth 20:1 (from 3GHz to 60GHz) for $\mathbf{VSWR}\leq 2$. The bandwidth enhancement of the hexagonal wide slot antenna due to the fractal curves is shown in a step by step manner. Relatively stable omnidirectional radiation pattern and satisfactory value of gain is obtained over the operation band.
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