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视觉假体中基于E类功率放大电路的无线能量与数据传输 被引量:1

Design of Power and Data Telemetry System Utilizing Class-E Amplifier for Visual Prosthesis
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摘要 介绍了一种基于E类功率放大电路的无线传输装置,通过电磁耦合的方式,为人工视觉假体的体内装置传输能量与数据。该装置采用调制深度为25%、载波频率为10MHz的幅移键控调制,通过一对耦合线圈同时传输能量与数据,减小了装置的体积,提高了可植入性。实验表明,该装置能同时为16通道微刺激器提供足够的能量,同时不归零码的传输速率可达到2Mbps。 A wireless transmission system for visual prosthesis is introduced. Power and data are transmitted through inductive link between only one pair of coils, in order to reduce the size of the device. The transmitter is based on Class-E power amplifier due to its high efficiency, and a modulation circuit is added to control the dc supply of the Class-E amplifier to achieve ASK modulation of data with modulation depth of 25%. In addition, an experimental system is implemented, and test shows that it sufficiently supports a 16-channel micro-stimulator on power delivery and data transfer rate.
出处 《中国医疗器械杂志》 CAS 2011年第4期239-242,245,共5页 Chinese Journal of Medical Instrumentation
基金 高技术研究发展计划(863项目:2009AA04Z326) 国家重点基础研究发展计划(973项目:2011CB7075002/3) 国家自然科学基金(60871091 31070895)
关键词 E类功率放大电路 ASK调制 能量与数据无线传输 视觉假体 class-e power amplifier, ASK, wireless transmission of power and data, visual prosthesis
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参考文献12

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