A 5.8GHz RF-Powered Transceiver with a 113μW 32-QAM Transmitter Employing the IF-based Quadrature Backscattering Technique

📋 论文概要

该论文提出了一种基于中频正交反向散射技术的5.8GHz射频供电收发器，实现了113μW的32-QAM发射机，解决了传统多级调制收发器功耗高的问题。

💡 主要创新点

• 提出中频正交反向散射技术，实现高能效的32-QAM调制，无需高功耗的射频合成器。
• 采用5.8GHz射频供电，实现超低功耗（113μW）的发射机，适用于无线传感器网络。

🏷 关键词

📄 原文摘要

network (WSN) application would deeply exacerbate the spectral congestion issue, RF-powered sensor nodes [1,2] still support only low spectral-efficiency modulation such as OOK. State-of-the-art standard-compliant RF transceivers for low-power applications have been achieving multilevel modulation such as Π/8 D8PSK [3], but their power consumption is as large as 1mW without PA even in the 400MHz band because of the large power consumption of the RF synthesizer, which is required to provide high-frequency accuracy and low phase noise for multilevel modulation. This work presents an IF-based quadrature backscattering technique, enabling n-PSK and n-QAM without an RF PLL. The presented technique exploits the passive RFID technologies, but can realize both

👥 作者与机构

Atsushi Shirane, Haowei Tan, Yiming Fang, Taiki Ibe, Hiroyuki Ito,

Noboru Ishihara, Kazuya Masu Tokyo Institute of Technology, Tokyo, Japan Although it is obvious that using a trillion sensor nodes for wireless sensor