| Summary: | 碩士 === 國立雲林科技大學 === 電子工程系 === 105 === This paper is based on the principle of magnetic resonance wireless charging, the use of this principle to form a large wireless charging array, LC resonant side of the signal input is generated by the Class E amplifier, and Class E amplifier is based on ZVS (Zero voltage switch) designed Switching amplifiers that can also have high power and low loss output at high frequencies. Using the characteristics of Class E amplifiers, our wireless charging does not affect the charge efficiency due to the switching losses caused by switching, and we use the receiver The antenna will produce an induced magnetic field, which will affect the magnetic field of the transmitter antenna and the voltage and current caused by the decline, so we use this phenomenon using an algorithm called [weight], the use of voltage and current decline, to determine whether There is a receiver side of the antenna, and finally can develop a weight below the weight of the receiver or the receiver side of the input power is not enough need to open multiple antennas, higher than the weight of the antenna on the antenna or no receiver On the receiving side of the impact of charging efficiency is not so close to save energy, so this paper A method for determining the antenna weights by using a switch in order to save energy loss and improve the charging efficiency.
Keywords: Wireless Power Transfer, Magnetic Resonance, Magnetic Induction, Resonant Circuit, Planar Spiral Antenna, Weight, Position detection, Class E amplifier
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