感应供电生物医学植入物中磁场衰减的功率控制

2013 IEEE Asian Solid-State Circuits Conference (A-SSCC) Pub Date : 2013-12-23 DOI:10.1109/ASSCC.2013.6691013

C. Brendler, Naser Pour Aryan, V. Rieger, S. Klinger, A. Rothermel

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引用次数: 4

摘要

提出了一种电感供电生物医学植入体的磁场衰减功率控制电路。由于眼球运动引起的感应供电视网膜植入物的大而快速的耦合变化，必须控制过度的功率。该方案通过衰减次级线圈中的磁场来降低接收功率。线圈短路是通过施加足够短的脉冲来实现并行ASK数据传输。该系统采用350 nm BiCMOS高电压技术制作和测量。测量结果表明，植入物产生的热功率有所降低。

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Power control by magnetic field diminishment in inductively powered biomedical implants

A power control circuit by magnetic field diminish-ment in inductively powered biomedical implants is presented. Due to large and fast coupling variations in inductively powered retinal implants caused by the eye movements, excessive power has to be controlled. This proposal attenuates the magnetic field in the secondary coil to reduce received power. Coil shorting is realized by applying short enough pulses to enable a parallel ASK data transmission. The system was fabricated and measured using a 350 nm BiCMOS High Voltage technology. Measurement results show a reduction of the thermal power generated by the implant.

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2013 IEEE Asian Solid-State Circuits Conference (A-SSCC)

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