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Wireless powering of single-chip systems with integrated coil and external wire-loop resonator

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5 Author(s)
Segura-Quijano, F. ; Centro Nacional de Microelectrónica (IMB-CNM, CSIC), Esfera UAB, Campus UAB, Cerdanyola del Vallés, Barcelona 08193, Spain ; Garcia-Canton, Jesus ; Sacristan, Jordi ; Oses, T.
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A procedure for inductive wireless powering of single-chip systems is presented. An integrated spiral coil is used as the power receiving component. An external resonator formed by a wire-loop inductor connected to a capacitor is placed in close proximity to the chip. The sinusoidal magnetic field generated at a distant transmitting loop is amplified by the resonator. The present approach enables delivering power in the order of tens of microwatts to a few milliwatts at distances longer than 10 cm using a frequency of 13.5 MHz. The integrated coil used here can be fabricated with any integrated circuit fabrication technology.

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Applied Physics Letters  (Volume:92 ,  Issue: 7 )