Full-duplex enabled wireless power transfer system via textile for miniaturized IMD

Full-duplex (FD) enabled wireless power transfer (WPT) system via textile for miniaturized IMD is presented. By utilizing the battery-free near-field communication (NFC) method, the system realizes wireless power and data transmission without a bulky battery or energy harvester which can diminish the physical size of implantable medical device ( IMD). Moreover, using textile as a medium of power transmission, the system overcomes the drawback and extends the limited effective range of the NFC method. In addition, as realizing simultaneous bidirectional data transmission over a single data channel, IMD has been further miniaturized. The proposed system including an external transmitter and the minimized IMD receiver supports 200 kbps and 50 kbps data rates for FSK downlink and LSK uplink telemetries at the same time with bit error rate (BER) of < 8 x 10(-5) and < 4 x 10(-5), respectively. The measured power transfer efficiency (PTE) and DC-to-DC power delivered to load (PDL) are 5.77% and 64 mW at 0.5/60 cm of vertical/horizontal distance.

Automated summary

A full-duplex wireless power transfer system via textile is presented for miniaturized implantable medical devices. The system eliminates the need for bulky batteries or energy harvesters, reducing the size of the devices. By using textile as the medium of power transmission, the system overcomes the limitations of the NFC method and extends the effective range. Additionally, simultaneous bidirectional data transmission is achieved, further miniaturizing the devices and improving system performance.