JSSC 2019第3期RF & Wireless0.13µm

A Wake-Up Receiver With a Multi-Stage Self-Mixer and With Enhanced Sensitivity

一种采用多级自混频器的超低功耗唤醒接收器，具有增强的灵敏度。

0.13-µm CMOS, 0.5V, 220nW, -56.4dBm@400kb/s, -63.6dBm@1.1µW

唤醒接收器超低功耗自混频器灵敏度增强干扰增强模式

▸多级自混频器提高转换增益

▸与RF匹配网络协同设计优化灵敏度

▸干扰增强模式利用干扰信号提升灵敏度

Abstract

An ultra-low power wake-up receiver with an energy-detection passive-RF archi tecture uses a multi-stage self- mixer that has a better conversion gain than the conventional envelope detector. The self-mixer, co-designed with the RF match- ing network, optimizes the sensitivity and minimizes the power consumption of the receiver. A wake-up receiver prototype in 0.13-µm CMOS operates at 550 MHz, consumes 220 nW from 0.5 V , and achieves a sensitivity of −56.4 dBm at a 400-kb/s chip rate using an 1