Inductively-coupled power and data link for neural prostheses using a class-E oscillator and FSK modulation
Inductively-coupled power and data link for neural prostheses using a class-E oscillator and FSK modulation
复制标题
使用 E 类振荡器和 FSK 调制的神经假体的电感耦合电源和数据链路
DOI：
10.1109/iembs.2003.1280869
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发表时间：
2003
期刊：
影响因子：
--
通讯作者：
G. DeMichele
中科院分区：
文献类型：
--
作者：
P. Troyk;G. DeMichele
尽管植入式电池在起搏器中广泛使用取得了成功，但植入式神经假体设备的功率要求通常超出了合理尺寸的植入式电池的能力。因此，经皮磁耦合仍然是为植入神经假体供电的首选方法。使用相同的感应链路进行电力传输和双向遥测是为植入设备供电和通信的一种有吸引力的解决方案，从而避免了经皮插头、电线或导管。 E 类功率振荡器已被认为是一种高效发射器电路，可用作向植入物传输功率的手段。尽管这种拓扑的高 Q 特性使得快速调制变得困难，但使用 E 类电路的同步频移键控 (FSK) 调制是可行的，从而将高效的功率发射器与高速数据链路相结合。使用这种方法，可以逐周期地调制发射机，几乎没有额外的功率损耗。在植入设备内，可以使用新颖的解调电路来完成 FSK 传输载波的解调。
Despite the success of implantable batteries as commonly used in pacemakers, implantable neural prosthetic devices typically have power requirements that exceed the capability of reasonably-sized implantable batteries. Therefore, transcutaneous magnetic coupling remains the method of choice for powering implanted neural prostheses. Using the same inductive link for transfer of power and bidirectional telemetry is an attractive solution to powering and communicating with implanted devices thus avoiding percutaneous plugs, wires, or conduits. The Class-E power oscillator has been identified as a highly-efficient transmitter circuit for use as a means of transferring power to an implant. Although the high-Q nature of this topology makes rapid modulation difficult, it is feasible to use synchronous frequency-shift-keyed (FSK) modulation of the Class-E circuit thereby combining an efficient power transmitter with a highspeed data link. Using this method, the transmitter can be modulated on a cycle-by-cycle basis with little to no additional power loss. Within an implanted device, demodulation of the FSK transmitted carrier can be accomplished using a novel demodulation circuit.