| FPGA-based amplitude and phase detection in DLLRF |
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| 作者姓名： | 刘熔 王峥 潘卫民 王光伟 林海英 沙鹏 曾日华 |
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| 作者单位： | 1 Institute of High Energy Physics, CAS, Beijing 100049, China;2 Graduate University of Chinese Academy of Sciences, Beijing 100049, China;3 School of Electronic and Information Engineering Tianjin University, Tianjin 300072, China |
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| 基金项目： | Supported by Knowledge Innovation Program of Chinese Academy of Sciences and National Natural Science Foundation of China (10675142) |
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| 摘 要： | The new generation particle accelerator requires a highly stable radio frequency（RF） system. The stability of the RF system is realized by the Low Level RF（LLRF） subsystem which controls the amplitude and phase of the RF signal. The detection of the RF signal＇s amplitude and phase is fundamental to LLRF controls. High-speed ADC（Analog to Digital Converter） ,DAC（Digital to Analog Converter） and FPGA（Field Programmable Gate Array） play very important roles in digital LLRF control systems. This paper describes the implementation of real-time amplitude and phase detection based of the FPGA with an analysis of the main factors that affect the detection accuracy such as jitter,algorithm＇s defects and non-linearity of devices,which is helpful for future work on high precision detection and control.
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| 关 键 词： | 相位检测 FPGA 振幅和 现场可编程门阵列 数模转换器 控制系统 射频系统 射频信号 |
| 收稿时间： | 2008-10-28 |
| 修稿时间： | 2009-1-6 |
FPGA-based amplitude and phase detection in DLLRF |
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| LIU Rong , WANG Zheng PAN Wei-Min WANG Guang-Wei LIN Hai-Ying SHA Peng , ZENG Ri-Hua.FPGA-based amplitude and phase detection in DLLRF[J].High Energy Physics and Nuclear Physics,2009,33(7):594-598. |
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| Authors: | LIU Rong WANG Zheng PAN Wei-Min WANG Guang-Wei LIN Hai-Ying SHA Peng ZENG Ri-Hua |
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| Affiliation: | Institute of High Energy Physics;CAS;Beijing 100049;China;Graduate University of Chinese Academy of Sciences;China;School of Electronic and Information Engineering Tianjin University;Tianjin 300072;China |
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| Abstract: | The new generation particle accelerator requires a highly stable radio frequency(RF) system. The stability of the RF system is realized by the Low Level RF(LLRF) subsystem which controls the amplitude and phase of the RF signal. The detection of the RF signal's amplitude and phase is fundamental to LLRF controls. High-speed ADC(Analog to Digital Converter) ,DAC(Digital to Analog Converter) and FPGA(Field Programmable Gate Array) play very important roles in digital LLRF control systems. This paper describes... |
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| Keywords: | digital LLRF high-precision CORDIC amplitude and phase detection FPGA jitter ADC nonlinear |
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