Abstract
AbstractIn this article, a fractal-based planar printed loop antenna is designed for rectenna applications. The concept of Hilbert fractal is considered in this design to lower the operating frequency at compact dimensions. This planar printed loop antenna is designed on FR4 substrate with a formfactor of 45 × 45 × 1.6 mm3 and fed with coaxial feed. The characteristics of antenna after the insertion of fractal elements at peculiar symmetrical locations of the conducting square loop structure are investigated through simulation-based experiments. Further the radiation characteristics were analyzed with respect to single element, and the 1 × 2 array implementations (with different feed orientations) were experimented with same magnitude and phase (broadside case). The proposed array design is triple band in nature (1.42/1.92/2.42 GHz) and can accept the EM signals at the peak gain 2.77/4.12/6.16 dB, respectively.KeywordsRectenna applicationsFractal loop antennaCoaxial feedAntenna array
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