A Fully Integrated 77GHz FMCW Radar System in 65nm CMOS

📋 论文概要

该论文实现了一个完全集成的77GHz调频连续波（FMCW）雷达系统，采用65nm CMOS工艺。解决了毫米波防撞雷达的集成度问题，实现了单芯片雷达收发系统。

💡 主要创新点

• 首次在65nm CMOS中实现完全集成的77GHz FMCW雷达系统。
• 采用FMCW架构，利用三角波调制实现距离和速度测量。

🏷 关键词

📄 原文摘要

Millimeter-wave anti-collision radars have been widely investigated in advanced CMOS technologies recently. This paper presents a fully integrated 77GHz FMCW radar system in 65nm CMOS. The FMCW radar transmits a continuous wave which is triangularly modulated in frequency and receives the wave reflected from objects. As can be illustrated in Fig. 11.2.1, for a moving target, the received frequency would be shifted (i.e. Doppler shift), resulting in two different offset frequencies f + and f − for the falling and rising ramps. Denoting the modulation range and period as B and Tm, respectively, we can derive the distance R and the relative velocity VR as listed in Fig. 11.2.1, where fc represents the center frequency and c the speed of light. The transceiver includes an RF front-end (PA, LNA, and mixer), two horn antennaes with exciters, an FMCW generator, and an FPGA-based signal processor.

👥 作者与机构

Yi-An Li, Meng-Hsiung Hung, Shih-Jou Huang, Jri Lee

National Taiwan University, Taipei, Taiwan