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A wireless power transfer (WPT) transmitter is presented that can simultaneously power devices operating at 200 kHz and 6.78 MHz, enabling a true multi-standard WPT transmitter. To achieve this, the proposed design utilizes two coils, each optimized for efficient power transfer when operating alone. By placing the coils co-axially on a single charging stand, concurrent power transfer is possible....
This paper proposes a wireless power transfer (WPT) transmitter that can concurrently operate at 200 kHz and 6.78 MHz in order to simultaneously power two receivers operating with different frequency standards. Unlike a dual-resonant single-coil design, the use of two separate coils decouples the design for one frequency from the other, enabling independent selection of inductance and Q-factor to...
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