| 11.8GHz低相噪频率源的设计 |
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| 引用本文： | 綦超,姜兴.11.8GHz低相噪频率源的设计[J].桂林电子科技大学学报,2012(3):189-192. |
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| 作者姓名： | 綦超 姜兴 |
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| 作者单位： | 桂林电子科技大学 信息与通信学院,广西 桂林 541004 |
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| 基金项目： | 广西科学研究与技术开发计划(0996028);广西研究生教育创新计划(2010105950809M17) |
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| 摘 要： | 针对汽车防撞雷达系统,设计了11.8GHz低相噪频率源.在对锁相环技术研究的基础上,分析相位噪声达到要求指标的可行性,并介绍鉴相器电路、压控振荡器电路以及环路滤波器电路的设计.测试结果表明该输出频率为11.8GHz的频率源获得很好的相位噪声性能,实现1kHz处相位噪声指标优于-90dBc/Hz,并且其他指标均达到要求.11.8GHz低相噪频率源能提高汽车防撞雷达系统的性能.
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| 关 键 词： | 频率源 锁相环 相位噪声 |
Design of 11.8 GHz low phase noise frequency synthesizer |
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| Qi Chao,Jiang Xing.Design of 11.8 GHz low phase noise frequency synthesizer[J].Journal of Guilin Institute of Electronic Technology,2012(3):189-192. |
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| Authors: | Qi Chao Jiang Xing |
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| Affiliation: | (School of Information and Communication Engineering,Guilin University of Electronic Technology,Guilin 541004,China) |
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| Abstract: | Low phase noise frequency synthesizer plays an important role in radar system.A 11.8 GHz low phase noise frequency synthesizer is designed for automotive anti-collision radar.Based on the study of phase locked-loop(PLL),the possibility for the implement of low phase noise is analysed,the design of the phase frequency detector,the VCO and the loop-filter is also introduced.The test result of the 11.8 GHz frequency synthesizer shows low phase noise is below-90 dBc/Hz at 1 kHz.The other results also reach intended targets.The 11.8 GHz low phase noise frequency synthesizer enhances the performance of the automotive anti-collision radar. |
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| Keywords: | frequency synthesizer PLL phase noise |
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