Abstract
SummaryIn this article, a split‐ring resonator‐inspired fractal antenna for the GSM and sub‐6‐GHz 5G applications is presented. The antenna geometry uses a combination of square‐shaped split‐ring resonators arranged in a Sierpinski fractal arrangement that is realized on a low‐cost FR4 substrate. The overall dimension of the proposed antenna is 0.35λ × 0.35λ mm2 (lowest frequency). The antenna resonates at a dual‐frequency band spanning from 1.75 to 2.0 (13.36%) and 3.01 to 4.18 GHz (33.42%) with a peak gain of 1.5 and 2.05 dBi at respective resonant peaks that correlate satisfactorily with the measured values. The proposed antenna uses Sierpinski fractal geometry on the top and the partial ground plane at the back with dipole‐shaped radiation patterns, and an efficiency of around 80% makes the antenna commercially suited for the GSM and sub‐6‐GHz 5G communication applications.
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