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Measurement of Supercapacitor Charging Characteristic for RF Wireless Charging  

Son, Myung Sik (Department of Electronic Engineering, Sunchon National University, KOREA)
Publication Information
Journal of the Semiconductor & Display Technology / v.20, no.3, 2021 , pp. 136-139 More about this Journal
Abstract
In this paper, we studied the charging characteristics of high-capacity supercapacitor with high current for RF wireless charging system for smart phone charging. The dc output of the RF-DC receiver is connected to supercapacitor after which is connected to DC-DC converter for charging a smart phone. This configuration stably supplies voltage and current for charging it. Studies show that the higher charging current use, the rapidly shorter the charging time of supercapacitor is. The currents of 2A, 10A and 27A were used for charging supercapacitors. The charging time was measured for 3000F, 6000F, 12000F supercapacitors which is parallelly connected with 3000F supercapacitors.
Keywords
Wireless Power Transmission System; RF Wireless Charging; Supercapacitor; Charging Time;
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  • Reference
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