一种超导系统信号检测器的研究  

Signal Detector of Superconducting System

作　　者：吴林 张镘 史建华 Wu Lin;Zhang Man;Shi Jianhua(Zhuhai Bowen Education Technology Development Co., Ltd., Zhuhai Guangdong 519000, China;Neusof Group Ltd.,Shenyang Liaoning 11079,China)

机构地区：[1]珠海博闻教育科技发展有限公司,珠海广东519000 [2]东软集团股份有限公司,辽宁沈阳110179

出　　处：《山西电子技术》2021年第4期71-73,78,共4页Shanxi Electronic Technology

摘　　要：超导磁共振系统的图像质量是系统综合的体现,是系统软硬件各个部件密切配合和优化校正算法结果。本文通过理论分析和实验数据,揭示了信号检测器模数转换器时钟相位噪声对超导核磁共振图像信噪比的影响,并针对超导磁共振信号检测器的设计,提出了一种改善超导磁共振成像系统信号检测器信噪比的方法。The image quality of the superconducting magnetic resonance system is the result of the close cooperation of various components of the system’s hardware and software,and it is also related to the optimization of the correction algorithm.Based on theoretical analysis and experimental data,this paper reveals the influence ofclock phase noise of signal detector analog-to-digital converter on the signal-to-noise ratio of superconducting MRI images,and proposes an improved superconducting magnetic resonance signal detector method to improve SNR of signal detector of superconducting magnetic resonance imaging system.

关 键 词：超导系统 信号检测 相位抖动 相位噪声 信噪比 

分 类 号：TN79.1[电子电信—电路与系统]