Abstract
In this work, the wireless power transfer system employing nested open loop ring resonators at the ground plane is proposed. In the suggested design both the transmitter and the receiver are symmetric. The forward-facing view contains the transmission line. The ground plane contains number of 33 open loop ring resonators which are nested together. The system has a size of 40 × 40 mm2 with a transmission distance of 15 mm. The proposed design is investigated in two cases with and without the loading capacitor. Comparisons between the resonance frequency and the power transfer efficiency of the proposed design with and without the loading capacitor are presented. The coupled resonator system achieved an efficiency of 97% at 1.35 GHz while the system with the loading capacitor achieved an efficiency of 98.8% at 1 GHz. The proposed system is designed, simulated, and measured.
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