A 9.7GHz Self-Linearized-VCO-Based FMCW Chirp Generator Achieving 1.56GHz/μs Slope and 0.57μs Duration with 0.094% rms Frequency Error

📋 论文概要

该论文提出了一种基于自线性化VCO的Type-III FMCW合成器，通过CCal校准CMod非线性、双LMS校准减少数字开销，实现了极快的调频斜率和短持续时间。解决了FMCW雷达中高精度测距与快速速度估计的需求。

💡 主要创新点

• 提出自线性化VCO架构，通过CCal校准CMod的非线性，提升调频线性度。
• 采用双LMS校准（增益和偏移）减少数字开销，确保在快速调频率下稳定收敛。

🏷 关键词

📄 原文摘要

7GHz self-linearized-VCO-based Type-III FMCW synthesizer is presented. A CCal bank calibrates the nonlinearity of the CMod bank, and two LMS-based calibrations (gain and offset) reduce digital overhead and ensure stable convergence under fast chirp rates. Fabricated in 65nm CMOS, it achieves the shortest chirp duration of 0.57µs, a 40ns retrace, and a 1562.8MHz/µs chirp rate, delivering a 1GHz bandwidth with a 0.094% rms FM error. FMCW radars play a pivotal role in automotive sensing systems, where high-precision ranging and rapid velocity estimation are essential. With the recent allocation of the FR3 band for high-resolution sensing and communication, achieving both a wide modulation bandwidth and fast chirp generation has become increasingly important to meet stringent

👥 作者与机构

Daxu Zhang, Yuncheng Zhang, Zezheng Liu, Yuang Xiong, Michele Rossoni, Wenqian Wang, Ashbir Aviat Fadila, Duo Li, Minzhe Tang, Dongfan Xu,

Carrel de Gomez, Dingxin Xu, Kazuaki Kunihiro, Hiroyuki Sakai, Kenichi Okada Institute of Science Tokyo, Tokyo, Japan Abstract A 9