77 GHz波形发生器与MFSK调制的汽车雷达应用

Q. N. Nguyen, Hyongi Yoo, MyoungYeol Park, Youngsu Kim, F. Bien
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引用次数: 5

摘要

本文介绍了一种77 GHz多频移键控(MFSK)波形发生器。这种调制波形可以提高汽车雷达系统的检测能力。提出了一种MFSK调制控制逻辑(MMCL),该逻辑采用传统的Σ-Δ分数n锁相环来产生调制波形。在每个时间步长产生频移键控(FSK)的同时,MMCL具有跟踪线性扫频的能力。在硬件实现之前,考虑了行为模拟,生成了64步的输出。采用130纳米CMOS工艺设计了调制频率合成器。完成了77 GHz波形发生器模块,产生128个调制步长。调制的带宽和频率步长分别为100mhz和300khz。结果表明,该方案能够实现汽车雷达系统的MFSK调制波形,且处理间隔短至6 ms。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
A 77 GHz waveform generator with MFSK modulation for automotive radar applications
In this paper, a 77 GHz waveform generator with Multiple Frequency Shift Keying (MFSK) is presented. This modulation waveform can improve the detection ability of automotive radar systems. A MFSK Modulation Control Logic (MMCL) is proposed, incorporates a conventional Σ-Δ fractional-N Phase Locked Loop to generate the modulation waveform. The MMCL has capability to track the linear frequency sweep while generating the frequency shift keying (FSK) in each time step. Prior to realizing the hardware, a behavioural simulation is considered and the output of 64 steps is generated. The modulated frequency synthesizer is designed using 130-nm CMOS process. The module of 77 GHz waveform generator, which generates 128 modulation steps, is accomplished. The bandwidth and the frequency step of the modulation are 100 MHz and 300 kHz, respectively. The results demonstrate that the proposed scheme has ability to realize the MFSK modulation waveform for automotive radar systems, also a short processing interval of 6 ms can be achieved.
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