A 110µW 2.5kb/s -103dBm-Sensitivity Dual-Chirp Modulated ULP Receiver Achieving -41dB SIR

📋 论文概要

本文提出一种采用双啁啾调制的超低功耗接收机，在110µW功耗下实现2.5kb/s数据率和-103dBm灵敏度，并达到-41dB的信干比（SIR），解决了传统OOK调制接收机在拥挤频谱中易受干扰的问题。

💡 主要创新点

• 提出双啁啾调制方案，在保持超低功耗的同时显著提升抗干扰能力。
• 实现110µW功耗下-103dBm高灵敏度与-41dB SIR的优异综合性能。

🏷 关键词

📄 原文摘要

*Equally-Credited Authors (ECAs) As the number of devices connected to the IoT has increased rapidly in recent years, stricter requirements have been placed on IoT radio receivers (RX) that can operate in an increasingly crowded spectrum while maintaining ultra-low-power (ULP) consumption, high sensitivity, and low cost. Prior ULP radios utilizing on-off keying (OOK) modulation with <1μW power consumption offer good sensitivity, but are susceptible to in-band (IB) and out-of-band (OOB) interference and have high latency overhead [1]. As shown in Fig. 24.6.1, high-Q off-chip MEMS resonators and envelopetracking loops can mitigate OOB blockers and continuous-wave (CW) IB blockers [2,3], but fail to reject IB pulsed blockers common in the populated ISM bands. Two-tone OOK modulation can alleviate OOB blockers [4], but struggles to address close IB blockers and transient pulsed interferences. The works in [2,5] achieve strong blocker rejection,

👥 作者与机构

Milad Moosavifar*, Jaeho Im*, Trevor Odelberg, David Wentzloff

University of Michigan, Ann Arbor, MI