同步辐射装置主信号源的扩展方法研究  

Research on the extension method of the main signal source of the synchrotron radiation device

作　　者：张恺[1] 韦业龙 陈秋菊 吴丛凤[1] 庞健[1] 唐运盖 杜百廷 张善才[1] 冯光耀[1] Zhang Kai;Wei Yelong;Chen Qiuju;Wu Congfeng;Pang Jian;Tang Yungai;Du Baiting;Zhang Shancai;Feng Guangyao(University of Science and Technology of China,Hefei 230026,China)

机构地区：[1]中国科学技术大学,安徽合肥230026

出　　处：《电子技术应用》2024年第1期87-92,共6页Application of Electronic Technique

基　　金：中国科学技术大学青年创新基金(WK2100000027);中国科学院百人计划率先行动B类(KJ2310007003)。

摘　　要：主信号源是同步辐射装置的关键组成部分之一,它不仅用于产生同步辐射光源各子系统所需的稳定度极高的参考信号,还用于生成整个装置的控制系统所需的高精度工作时钟。一般使用射频信号源作为主信号源,而商业射频信号源一般只配备单输出通道,远远不能满足同步辐射装置的需要,使用传统功分器对主信号通道进行扩展又存在幅度衰减、精度下降且相位不一致的问题。为解决上述问题,利用射频芯片AD9361,研究了对主信号源的单路输出进行扩展的方法。该方法可根据用户需求完成相应数量的信号通道扩展,设计了AD9361芯片和FPGA主控模块相结合的硬件架构。搭建实验平台,开展了射频信号源在C波段扩展的实验研究,对所提出的扩展方法进行实验验证。实验结果表明,该方法能保证扩展信号的幅度、频率与相位与主信号保持高度一致。The main signal source is one of the key components of the synchrotron radiation device.It is not only used to generate the highly stable reference signals required by each subsystem of the synchrotron radiation light source,but also used to generate the high-precision working clock required by the control system of the entire device.Generally,one RF signal source is used as the main signal source.But the commercial RF signal source generally has only one output channel,which is far from meeting the needs of the synchrotron radiation device,while the use of traditional power splitters to expand the main signal channel also suffers from amplitude attenuation,accuracy degradation,and inconsistent phase.In order to solve the above problem,the method of extending one channel output of microwave signal source with RF shortcut chip AD9361 has been proposed in the paper.The proposed method can realize the expansion of the number of signal channels according to user requirements.A hardware architecture combining the AD9361 chip and the FPGA master control circuit has been designed.Then an experimental platform has been built to carry out the experimental research on the RF signal source expansion in C-band,with which the expansion method proposed can be verified.The experimental results show that with this method the amplitude and frequency of the expanded signal are highly consistent with the source signal,meanwhile the phase of the expanded signal in each channel is all highly consistent.

关 键 词：同步辐射 主信号源 射频信号源 通道扩展 AD9361 FPGA 

分 类 号：TN62[电子电信—电路与系统]