用于健康监测系统的低功耗CMOS BFSK收发器。

Sungho Kim, William Lepkowski, Seth J Wilk, Trevor J Thornton, Bertan Bakkaloglu
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引用次数: 12

摘要

介绍了一种低功耗CMOS收发器,用于在MICS波段工作的可植入和外部健康监测设备。LNA核心具有折叠配置的集成混频器,可重复使用偏置电流,从而在低电源水平下实现高线性度。基带带由一个伪差分MOS-C带通滤波器组成,实现对150khz偏置BFSK信号的解调。一个全数字锁频环路用于在RX模式下产生LO,并用于在TX模式下驱动AB类功率放大器。MICS收发器采用0.18μm 1聚6金属CMOS工艺设计和制造。在数据速率为100kb/s、NF为40dB和11dB时,灵敏度分别达到-70dBm和-98dBm,而在1.2V和1.8V电压下,功耗分别为600μW和1.5mW。当输入功率为-70dBm (1.2V)和-98dBm (1.8V),数据速率为100kb/s时,ber小于10-3。最后,发射机输出功率为0dBm,功耗为1.8mW。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
A Low-power CMOS BFSK Transceiver for Health Monitoring Systems.

A CMOS low-power transceiver for implantable and external health monitoring devices operating in the MICS band is presented. The LNA core has an integrated mixer in a folded configuration to reuse the bias current, allowing high linearity with a low power supply levels. The baseband strip consists of a pseudo differential MOS-C band-pass filter achieving demodulation of 150kHz-offset BFSK signals. An all digital frequency-locked loop is used for LO generation in the RX mode and for driving a class AB power amplifier in the TX mode. The MICS transceiver is designed and fabricated in a 0.18μm 1-poly, 6-metal CMOS process. The sensitivities of -70dBm and -98dBm were achieved with NF of 40dB and 11dB at the data rate of 100kb/s while consuming only 600μW and 1.5mW at 1.2V and 1.8V, respectively. The BERs are less than 10-3 at the input powers of -70dBm at 1.2V and -98dBm at 1.8V at the data rate of 100kb/s. Finally, the output power of the transmitter is 0dBm for a power consumption of 1.8mW.

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