This paper presents a wake-up circuit for battery-assisted passive (BAP) RFID applications. The circuit is composed by a differential envelope detector and a comparator with a systematic offset. The differential RF signal envelope detector and the comparator are designed to increase the wake-up circuit sensitivity and to have low power consumption, improving battery lifetime. The wake-up circuit was designed and implemented in standard CMOS 0.18 µm process as part of an UHF RFID battery-assisted passive system, achieving a sensitivity of − 31 dBm and consuming only 150 nA.

中文翻译：

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基于系统偏移的BAP UHF RFID标签差分低功耗唤醒电路

本文介绍了一种用于电池辅助无源（BAP）RFID应用的唤醒电路。该电路由差分包络检波器和具有系统偏置的比较器组成。差分RF信号包络检波器和比较器旨在提高唤醒电路的灵敏度，并具有较低的功耗，从而延长了电池寿命。唤醒电路是作为UHF RFID电池辅助无源系统的一部分，以标准CMOS 0.18 µm工艺设计和实现的，灵敏度为− 31 dBm，仅消耗150 nA电流。