A fractal circularly polarized antenna with tunable radiation pattern is proposed, Three layered antenna structure with back to back patch supports omni-directionality, These antenna structures were fed at two points with 90° phase shift splitter to support circular polarization. The fractal structures were designed so to operate at multiple frequency bands (S, C, Ku). The change in phase of excitation between two parallel structures provide tunable radiation pattern. The results and performance were analyzed through simulations on ADS tool.
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