基于时间电压调节的30 μW远程供电植入物

ESSCIRC Conference 2015 - 41st European Solid-State Circuits Conference (ESSCIRC) Pub Date : 2015-11-02 DOI:10.1109/ESSCIRC.2015.7313912

M. Ghanad, C. Dehollain, Michael M. Green

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引用次数: 0

摘要

提出了一种时间交错无线电力传输技术，以避免电力传输、传感器读取和通信操作之间的干扰。为了提高无线电力传输效率，还提出了基于时间的电压控制回路。控制回路根据基站线圈与可植入装置之间的耦合系数调整功率传输帧的持续时间。采用0.18 μm CMOS工艺制备了平均射频功耗为29.5 μW的可植入芯片。该芯片记录局部体温的精度为±0.05℃。

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A 30 μW remotely-powered implant with time-based voltage regulation

A time-interleaved wireless power transmission technique is presented to avoid interference between power transmission, sensor readout and communication operations. A time-based voltage control loop is also proposed to increase wireless power transmission efficiency. The control loop adjusts the duration of power transfer frames based on the coupling factor between the coils of the base station and the implantable device. An implantable chip with average RF power dissipation of 29.5 μW is fabricated using 0.18 μm CMOS technology. The chip records local body temperature with accuracy of ±0.05°C.

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ESSCIRC Conference 2015 - 41st European Solid-State Circuits Conference (ESSCIRC)

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