A 47GHz Mixed-Mode FMCW Signal Generator for Fast Triangular Chirp Modulation

2019 IEEE International Conference on Electron Devices and Solid-State Circuits (EDSSC) Pub Date : 2019-06-12 DOI:10.1109/EDSSC.2019.8754050

Guopei Chen, Ruichang Ma, Mengdi Cao, Luqiang Duan, Zhiyuan Chen, W. Deng, B. Chi

引用次数: 0

Abstract

A 47GHz frequency-modulated continuous-wave (FMCW) radar is presented. A current DAC with a 10bit 1st $\Sigma \Delta$ modulator is utilized to improve the equivalent DCO frequency resolution. A type-II PLL with the polarity-alternation is proposed to remove the frequency error at turning-around points (TAPs). The rms frequency error is improved 10x with 7GHz bandwidth and 200$\mu s$ period, which has been verified by MATLAB/Simulink.

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用于快速三角啁啾调制的47GHz混合模FMCW信号发生器

介绍了一种47GHz调频连续波(FMCW)雷达。采用10bit 1 $\Sigma \Delta$调制器的电流DAC来提高等效DCO频率分辨率。提出了一种具有极性交替的ii型锁相环，以消除旋转点的频率误差。在带宽为7GHz、周期为200 $\mu s$的情况下，有效值频率误差提高了10倍，并通过MATLAB/Simulink进行了验证。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

2019 IEEE International Conference on Electron Devices and Solid-State Circuits (EDSSC)

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