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首页> 外文期刊>IEEE Journal of Solid-State Circuits >A 7×7×2 mm3 8.6- μ W 500-kb/s Transmitter With Robust Injection-Locking-Based Frequency-to-Amplitude Conversion Receiver Targeting for Implantable Applications
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A 7×7×2 mm3 8.6- μ W 500-kb/s Transmitter With Robust Injection-Locking-Based Frequency-to-Amplitude Conversion Receiver Targeting for Implantable Applications

机译：一个7×7×2 mm3 8.6-μw500 kb / s发射器，具有稳健的注射锁定频率 - 幅度转换接收器，其针对可植入应用

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摘要

A transmitter (TX)/receiver (RX) pair using galvanic coupling to achieve in-body to on-body body channel communication (I2O-BCC) for ultra-low power (ULP) miniaturized implanted applications is presented. The I2O-BCC enables low loss communication (<40 dB) within 10-40 MHz band and up to 10-cm in vivo communication distance using the body as a transmission medium. Injection locking (IL)-based frequency-to-amplitude (F2A) conversion demodulator is proposed in RX. It can handle more than 20% frequency variations exhibited by the TX frequency-shift keying (FSK) signals due to the lack of accurate off-chip reference. The packaged implanted TX measures 7x7x2 mm(3). It contains a micro-battery, two micro-probes, and the designed SoC in 130-nm CMOS process. The in-body TX radio block consumes only 8.6 mu W at 500 kb/s with an on-chip power management unit that exhibits a 45% power efficiency, while the on-body RX consumes 591.5 mu W. The TX radio block power is 8x lower than previous works and achieves energy efficiency at 17.2 pJ/b with minimal bill of material (BOM).
机译：呈现了用于超低功率（ULP）小型化植入应用的电流耦合以实现体内体通道通信（I2O-BCC）的发射器（TX）/接收器（RX）对。 I2O-BCC在10-40MHz带内的低损耗通信（<40 dB），使用主体作为传输介质，在体内通信距离内高达10厘米。在Rx中提出了基于注射锁定（IL）的频率到振幅（F2A）转换解调器。由于缺乏精确的片外参考，它可以处理由TX频移键控（FSK）信号所呈现的20％以上的频率变化。包装植入的TX测量7x7x2 mm（3）。它包含微电池，两个微型探头和130nm CMOS工艺中设计的SOC。体内TX无线电块在500 kB / s的情况下仅消耗8.6μW，用片上电源管理单元，该单元具有45％的功率效率，而在体内Rx消耗591.5μW。TX无线电块功率是8倍低于以前的作品，并在17.2 pj / b达到能效，最小的材料清单（BOM）。

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