A 320GHz Phase-Locked Transmitter with 3.3mW Radiated Power and 22.5dBm EIRP for Heterodyne THz Imaging Systems

📋 论文概要

该论文提出了一种320GHz锁相发射机，用于外差太赫兹成像系统，解决了太赫兹成像中因缺乏低噪声放大器而导致的灵敏度不足和照明源功率需求过大的问题。通过集成锁相环和功率放大器，实现了3.3mW的辐射功率和22.5dBm的等效全向辐射功率。

💡 主要创新点

• 首次在320GHz频段实现锁相发射机，结合锁相环和功率放大器，提高了频率稳定性和输出功率。
• 采用外差架构，降低了成像系统对像素灵敏度的要求，从而减少了照明源的功率需求。

🏷 关键词

📄 原文摘要

STMicroelectronics, Crolles, France 1 2 Non-ionizing terahertz imaging using solid-state integrated electronics has been gaining increasing attention over the past few years. However, there are currently several factors that deter the implementations of fully-integrated imaging systems. Due to the lack of low-noise amplification above fmax, the sensitivity of THz pixels on silicon cannot match that of its mm-Wave or light-wave counterparts. This, combined with the focal-plane array configuration adopted by previous sensors, requires exceedingly large power for the illumination sources. Previous works on silicon have demonstrated 1mW radiation [1,3]; but higher power, as well as energy efficiency, are needed for a practical imaging system. In addition, heterodyne imaging scheme was demonstrated to be very

👥 作者与机构

Ruonan Han1,2, Chen Jiang1, Ali Mostajeran1, Mohammad Emadi1,

Hamidreza Aghasi1, Hani Sherry3, Andreia Cathelin3, Ehsan Afshari1 Cornell University, Ithaca, NY, Massachusetts Institute of Technology, Cambridge, MA, 3