Abstract
This paper presents the design and simulation of multiband Sierpinski fractal antenna with different patch (rectangular, circular and triangular) geometries. To validate the effect of fractal; on microstrip array, a 2x2 fractal antenna array is also designed and studied. Finally, a qualitative comparison is made among fractal based defected patch and defected ground plane structures separately, for the entire single antenna and array cases. All antennas are designed using HFSS and optimized to operate at 28 GHz, considering a FR-4 substrate material. The proposed multiband antenna and its array can find extensive applications in Ka band and other wireless communications.
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