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This letter presents a compact fractal loop rectenna for RF energy harvesting at GSM1800 bands. First, a fractal loop antenna with novel in-loop ground-plane impedance matching is proposed for the rectenna design. Also, a high-efficiency rectifier is designed in the loop antenna to form a compact rectenna. Measured results show that an efficiency of 61% and an output dc voltage of 1.8 V have been...
In this paper, two types of differential topology rectifier are studied and designed for RF energy harvesting at GSM1800 band 1.83GHz. The proposed differential serial rectifier and differential doubler rectifier are with odd harmonics suppression characteristics. Radial stubs are utilized to filter the output harmonics, which makes the rectifier more compact. The rectifiers with Schottky diodes (SMS7630)...
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