Envelope detector sensitivity and blocking characteristics
Envelope detector sensitivity and blocking characteristics
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包络检测器灵敏度和阻塞特性
DOI：
10.1109/ecctd.2011.6043845
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发表时间：
2011
期刊：
影响因子：
--
通讯作者：
C. Svensson
中科院分区：
文献类型：
--
作者：
Emil Nilsson;C. Svensson
本文提出了一个低功耗包络检波器的灵敏度的解析表达式，由一个微弱的RF信号驱动，在阻塞信号的存在。包络检测器已被提出用于RFID和无线传感器系统等应用中的低功率唤醒无线电。在一个常用的电路拓扑结构的现代短沟道MOS晶体管的模拟的理论结果进行了验证。讨论了一个无线电前端的教程示例，包括一个LNA和一个检测器。结果表明，低功耗包络检波器的灵敏度可以达到-62 dBm的低功耗LNA和存在的CW阻断。
This paper presents analytical expressions for the sensitivity of a low power envelope detector driven by a weak RF signal in the presence of a blocking signal. The envelope detector has been proposed for low power Wake-Up radios in applications such as RFID and wireless sensor systems. The theoretical results are verified with simulations of a modern short channel MOS transistor in a commonly used circuit topology. A discussion around a tutorial example of a radio frontend, consisting of an LNA and a detector, is presented. It is shown that the sensitivity of a low power envelope detector can reach −62 dBm with a low power LNA and in presence of a CW blocker.