A 20kbps 98nW -62.8dBm Sensitivity Wake-up Receiver at 2.4GHz

Suhao Chen; Chenchong Yuan; Hongtao Huang; Yiming Hou; Yonghua Chu; Menglian Zhao; Xiaopeng Yu; Xiongchuan Huang

doi:10.1587/elex.21.20240713

This article has now been updated. Please use the final version.

A 20kbps 98nW -62.8dBm Sensitivity Wake-up Receiver at 2.4GHz

Suhao Chen, Chenchong Yuan, Hongtao Huang, Yiming Hou, Yonghua Chu, Menglian Zhao, Xiaopeng Yu, Xiongchuan Huang

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Keywords: wake-up receiver, high-speed, ultra-lower-power, supply robustness, differential envelope

JOURNAL FREE ACCESS Advance online publication

Article ID: 21.20240713

DOI https://doi.org/10.1587/elex.21.20240713

The final version of this article is now available: Vol. 22 (2025), No. 3 pp. 20240713-20240713

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Abstract

This paper presents a highly integrated, relatively high data rate wake-up receiver (WuRX) designed and implemented in 65nm CMOS technology. The receiver operates at 2.4 GHz band and exhibits robustness against power supply variations, and achieves a data rate of 20kbps. It employs a sub-threshold enhanced differential structure for the envelope detector to enhance noise performance and a bias-free baseband amplifier to improve the sensitivity. Operating at a nominal voltage of 0.5V, the WuRX consumes just 98nW and achieves a sensitivity of -62.8dBm.

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