An energy super-regenerative wake-up receiver with interference and pre-ED noise power suppression

• Main Authors: Yang, Chuanshi, Tang, Kai, Gao, Hao, Guo, Yanshu, Jiang, Hanjun, Heng, Chun-Huat, Zheng, Yuanjin
• Other Authors: School of Electrical and Electronic Engineering
• Format: Article
• Language: English
• Published: 2025
• Subjects: Engineering; Current-reuse LNA; Energy super-regenerative receiver
• Online Access: https://hdl.handle.net/10356/182780
• Institution: Nanyang Technological University

This article presents a novel energy super-regenerative (ESR) wake-up receiver (WuRX) which remarkably reduces the power consumption of baseband circuits through directly detecting the RF signal's energy and accumulating it at an exponential rate. To improve the sensitivity, a noise power cancellation technique implemented through a pseudo-differential architecture is proposed to alleviate the interference and pre-ED noise power. To suppress the input referred noise further, a MEMS resonator is employed to provide passive gain. Furthermore, the FSK and on-off keying (OOK) demodulation can be configured according to different applications and varying environment. The ESR-WuRX is fabricated in a 65-nm CMOS technology, and it achieves - 83.6 dBm sensitivity at 200-kbps data rate consuming 150.6- μ W power at 1-V voltage supply. In addition, - 24.1 dB SIR is achieved at the frequency offset of 7 MHz. The total silicon area is about 1.69 mm2