A Double Input RF Energy Harvesting Circuit Using Wilkinson Power Combiner and DC Load Analysis of the Circuit
2019
KASAR, Ömer | KAHRİMAN, Mesud | GÖZEL, Mahmut Ahmet
The signals are emitted from the wireless communication systems to the environment at many frequencies. Energy harvesting is the process of converting the the existing signals to the direct current and voltage by taking the energy. In this study, we designed an energy harvesting circuit using Wilkinson power combiner. The proposed circuit; combines received power from two input arms, and then transmits to the Greinacher Rectifier circuit. The central frequency of the design was selected as 2.45 GHz to cover the ISM band. In the study, input power-efficiency and input power-output voltage analysis of the designed circuit were performed. In addition, these analyzes were repeated according to the changing values of the load resistance. After all, the best performance; for 9 dBm input power and 200 Ohm load resistance; approximately 68% of the total conversion efficiency and 1Volt output voltage was obtained.
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