Abstract
A closely spaced two-element wideband tree shaped fractal dielectric resonator antenna (DRA) design with low mutual coupling over a wide band of 4.05–10 GHz is proposed. By properly arranging array elements, and using C-shaped periodic defected ground structure (PDGS), mutual coupling reduction has been achieved. Mutual coupling less than −15dB over the entire band of interest is achieved. Conformal strip feeding of trapezoidal shape is used to achieve wide bandwidth of about 84.7%. Different design parameters, radiation patterns with and without PDGS and its associated results are discussed in this paper.
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