An implantable wireless bidirectional communication microstimulator for neuromuscular stimulation

Shuenn Yuh Lee, Shyh Chyang Lee

研究成果: Article同行評審

85 引文 斯高帕斯(Scopus)


This paper presents the integrated circuit design for a wireless bidirectional transmission microstimulator. This implantable device is composed of an internal radio-frequency (RF) front-end circuit, a control circuit, a stimulator, and an on-chip transmitter. A 2-MHz amplitude-shift keying modulated signal, including the power and data necessary for the implantable device, is received, and a stable 3-V dc voltage and digital data will be extracted to further execute neuromuscular stimulation. The current-mode microstimulator can produce a bidirectional output current with 8-bit resolution for stimulation. The maximum stimulation current is 1 mA while the stimulation frequency is from 20 Hz to 2 kHz and the pulsewidth of stimulation current is from 150 to 500 μs. Furthermore, the system can acquire the biological sensing signal by means of an on-chip transmitter. Most of the signal processing circuits have been designed with low-power schemes to reduce the power consumption, and the performance is also conformed to the requirements of the microstimlator. All of the circuits except for the RF link are combined in a single chip and implemented in TSMC 0.35-μm 2P4M standard CMOS process.

頁(從 - 到)2526-2538
期刊IEEE Transactions on Circuits and Systems I: Regular Papers
出版狀態Published - 2005 十二月

All Science Journal Classification (ASJC) codes

  • 電氣與電子工程


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