This paper presents a new on–off keying modulation circuit for a Class-E power transmitter used in high-data-rate wireless links used for powering medical implants. A circuit technique is proposed to keep the current of the RF choke of the power transmitter constant, while the transmitter turns on and off. This allows the transmitter to quickly turn on and off. To prove the feasibility of the proposed circuit, a wireless power and data transfer link based on the proposed circuit was designed and implemented. At a carrier frequency of 2.5 MHz, the measured data rate was 625 kbps, which means that a data-rate-to-carrier-frequency ratio of 25% has been achieved. The power transfer efficiency and the power delivered to the load, with a 2.37-μH transmitter coil and a 1.4-μH receiver coil separated by a 1.0-cm air gap, were measured to be 21% and 80 mW, respectively. The measured bit error rate of the link was less than 10 −5 .

中文翻译：

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具有开关键控数据调制的 E 类电源和数据发射器，用于向医疗植入物的无线电力和数据传输

本文介绍了一种新的开关键控调制电路，用于为医疗植入物供电的高数据速率无线链路中使用的 E 类功率发射器。提出了一种电路技术来保持功率发射器的射频扼流圈电流恒定，同时发射器打开和关闭。这允许发射器快速打开和关闭。为了证明所提出电路的可行性，设计并实现了基于所提出电路的无线电源和数据传输链路。在 2.5 MHz 的载频下，测得的数据速率为 625 kbps，这意味着已实现 25% 的数据速率与载频之比。功率传输效率和传输到负载的功率（2.37-μH 发射器线圈和 1.4-μH 接收器线圈由 1.0-cm 气隙隔开）测量为 21% 和 80 mW，分别。测得的链路误码率小于10 -5 。