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本文提出一种基于接收器基FLL（RBFLL）的2.4GHz多通道OOK接收器，通过AFC初始调谐后关闭以降低功耗，并由RBFLL补偿频率误差，实现了227pJ/b的能效和-83dBm的灵敏度，适用于物联网应用。
The OOK demodulator and symbol timing-recovery circuits convert the ED output into final digital bit streams. In Fig. 13.1.2, for the incoming OOK signal, the initial tuning for the VCO frequency is done by the AFC. The AFC then turns off to reduce power consumption. The frequency error (Δf) is subsequently compensated by the RBFLL. 1 2 With growing interest in the internet-of-things (IoT), there has been increasing demand for wireless transmission of information captured by various sensors with minimum power dissipation, which is difficult to achieve with existing solutions such as Zigbee and Bluetooth-LE. Accordingly, there has been a high demand for an ultra-low power (ULP) transceiver that reduces the power by more than an order of magnitude relative to that of existing solutions. Most of
Lee Jae-Seung1, Kim Joo-Myoung1, Lee Jae-Sup2, Han Seok-Kyun1, Lee Sang-Gug1
KAIST, Daejeon, Korea, Samsung Advanced Institute of Technology, Suwon, Korea following envelope detector (ED), which demodulates the OOK signal