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本文提出一种用于植入式神经假体的无线供电读出IC,功耗仅为280µW,动态范围达到108dB。通过采用双输出稳压整流器实现无线电容供电,解决了植入设备长期供电与高精度信号读出的难题。
The development of advanced neuroprostheses for restoration of function after spinal cord injury (SCI) is one of the most rapidly growing directions for neuroengineering research. Among the most exciting solutions is a networked neuroprosthesis (NNP) system, comprising a distributed network of implanted components to sense and stimulate throughout the body. These systems are being used with SCI individuals to provide grasp and reach functions, but do not presently feature any critical health monitoring. In fact, due to placement proximity of its components to muscles, an NNP platform is ideal for subcutaneous recording of the photoplethysmogram (PPG) signal from muscles, which is promising for implanted blood pressure monitoring. Also, the distributed nature of NNP system components throughout the body is ideal for wireless capacitive powering, a new modality with advantages over inductive links in terms of
Fatemeh Marefat, Reza Erfani, Kevin L. Kilgore, Pedram Mohseni
Case Western Reserve University, Cleveland, OH