⚡ 本页包含 AI 生成的分析内容，仅供参考
该论文提出了一种用于无线传感器网络的超低功耗唤醒接收机，工作在2.4GHz和915MHz频段，总功耗仅51µW。通过引入偏移和噪声抑制技术，改善了包络检测器在低输入信号下的灵敏度瓶颈，实现了高灵敏度与低功耗的平衡。
sensor networks (WSN), an always-on wake-up receiver (WuRx) can be used to monitor the radio link continuously. For truly autonomous sensor nodes employing energy scavenging, only 50µW power is available for the WuRx [1]. An envelope detector is a popular choice in WuRx because of its low power consumption. However, the detector is always the bottleneck of the receiver sensitivity since it attenuates low level input signal and adds excessive noise. One way of improving sensitivity is to amplify the signal before the detector, for example at RF [2, 3] or IF [4] stages, to enhance the SNR at the output. This work focuses on reducing receiver noise to achieve better sensitivity. A double-sampling technique is applied to the downconverting envelope detector to
Xiongchuan Huang, Simonetta Rampu, Xiaoyan Wang,
Guido Dolmans, Harmke de Groot Holst Centre-IMEC, Eindhoven, Netherlands In order to simultaneously optimize network lifetime and latency in wireless