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Transmitting coil with uniform magnetic field distribution allows the received coil to be positioned freely and keeps the coupling coefficient, the received power, and the power transfer efficiency stable. Traditionally, the transmitting coil is realized by connecting the coil turns in series and each turn has the same current. In this paper, a new transmitting coil is proposed, in which all the coil...
Wireless power transfer (WPT) is an effective method for power supply from wearable devices to implantable devices (IMDs). To reduce the IMD size, the received coil can be integrated with other functional circuits, whereas the efficiency is low if the traditional inductively coupled method is used. In this paper, limiting factors of the WPT efficiency including the quality factor of coils and the...
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