Abstract

The proposed a front-end of Bluetooth antenna with filter circuits and a continuous-time quadrature band pass sigma-delta (ΣΔ) modulator integration with CICFF topology are presented for wireless charging application. Continuous-time quadrature band pass sigma-delta (ΣΔ) modulator with Bluetooth link communication in A4WP and control strategy has been adopted in state-of-the-art wireless power transfer (WPT) applications to meet power demand with the highest efficiency against coupling and load variations. The proposed circuits used WuRx technology for power saving and produce one path combo design for Bluetooth antenna and wireless charging coil.

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