完全集成的24GHz 1TX-2RX收发器用于紧型FMCW雷达应用.
Goo-Han Ko1, Seung-Jin Moon1, Seong-Hoon Kim1
1School of Electrical Engineering, Chung-Ang University, Seoul 06974, Republic of Korea.
Sensors (Basel, Switzerland)
|March 13, 2024
概括
本研究介绍了一种紧的24GHz频率调制连续波 (FMCW) 雷达收发器,具有集成组件,用于提高雷达应用中的性能. 开发的系统表现出高效的功率输出和高增益,使得距离和角度的测量准确.
科学领域:
- 电气工程 电气工程
- 微波工程 微波工程
- 集成电路 集成电路
背景情况:
- 紧型频率调制连续波 (FMCW) 雷达系统对于各种应用至关重要,包括汽车和工业传感.
- 现有的FMCW雷达收发器经常面临整合,功耗和性能指标方面的挑战.
- 对于下一代传感解决方案,不断需要高度集成,低功耗和高性能雷达收发器.
研究的目的:
- 提供一个完全集成的24GHz FMCW雷达收发器,其中有一个发射器 (TX) 和两个接收器 (RX).
- 为了证明一个紧的FMCW雷达系统的可行性,用于目标检测和测量.
- 为了在一个小的形状因素中实现输出功率,增益和相位噪声方面的高性能.
主要方法:
- 使用65nmCMOS技术设计和制造一个24GHz的雷达收发器.
- 集成一个分数N相锁循环 (PLL) 合成器和可编程的声发生器.
- 实现直接转换的I-Q接收器架构,使用DC偏移取消 (DCOC) 电路.
- 发射器 (TX) 输出功率和接收器 (RX) 增益的表征.
- 使用带有Yagi天线的原型FMCW雷达进行系统级验证.
主要成果:
- 集成的收发器实现了13dBm的TX输出功率,在24-24.25GHz频段中变化最小 (<0.5dB).
- RX链提供100dB的高整体增益.
- 合成器在100kHz的偏移时表现出 -80dBc/Hz的相位噪声.
- 制造的收发器从1V电源以220mW的功率运行,模具尺寸为4.84mm2.
- 成功证明了对目标的距离和角度测量能力.
结论:
- 一个完全集成的24GHz FMCW雷达收发器已经成功设计和演示.
- 紧的尺寸,低功耗和高性能使这种收发器适合各种紧型雷达应用.
- 取得的结果验证了拟议设计对先进雷达传感系统的潜力.
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