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首页> 外文期刊>Microsystem technologies >A remotely powered fully integrated low power class-E power amplifier for implantable sensor systems
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A remotely powered fully integrated low power class-E power amplifier for implantable sensor systems

机译：用于植入式传感器系统的远程供电完全集成式低功耗E类功率放大器

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摘要

This paper presents a fully integrated low power class-E power amplifier and its integration to remotely powered sensor system. The on-chip 1.2 GHz power amplifier is implemented in 0.18 A mu m CMOS process with 0.2 V supply. The implantable system is powered by using an inductively coupled remote powering link at 13.56 MHz. A passive full-wave rectifier converts the induced AC voltage on the implant coil into a DC voltage. A clean and stable 1.8 V supply voltage for the sensor and communication blocks is generated by a voltage regulator. On-off keying modulated low-power transmitter at 1.2 GHz is used for the transmission of the data collected from the sensors. The transmitter is composed of a LC tank oscillator and a fully on-chip class-E power amplifier. Compared to the conventional class-E power amplifiers, an additional network which reduces the on-chip area is used at the output of the power amplifier. The measurement results verify the functionality of the remotely powered implantable sensor system and the power amplifier. The integrated power amplifier provides -10 dBm output power for 50 Omega load with a drain efficiency of 31.5 %. The uplink data communication with a data rate of 600 kbps is established by using a commercial 50 Omega chip antenna at 1 m communication distance.
机译：本文提出了一种完全集成的低功耗E类功率放大器，并将其集成到远程供电的传感器系统中。片上1.2 GHz功率放大器采用0.18 AμmCMOS工艺，0.2 V电源实现。可植入系统通过使用13.56 MHz的电感耦合远程供电链路供电。无源全波整流器将植入线圈上的感应交流电压转换为直流电压。电压调节器可为传感器和通讯模块提供干净稳定的1.8 V电源电压。 1.2 GHz的开关键控调制低功率发射机用于传输从传感器收集的数据。该发射器由一个LC振荡电路振荡器和一个完整的片内E类功率放大器组成。与传统的E类功率放大器相比，在功率放大器的输出端使用了一个减小片上面积的附加网络。测量结果验证了远程植入式传感器系统和功率放大器的功能。集成功率放大器为50Ω负载提供-10 dBm输出功率，漏极效率为31.5％。通过使用商用50 Omega芯片天线以1 m的通信距离建立具有600 kbps数据速率的上行链路数据通信。

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