摘要
针对目前有源探头的探测频率主要集中在低频段,难以满足高频段探测需求的问题,提出了一种小型、高带宽、非接触式的有源磁场探头。该有源磁场探头采用多层印刷电路版(PCB)制作,于无源探头的基础上,加入了有源放大器模块及其配套的电源管理芯片,对超宽带类型探头的传输增益进行提升;并从频率响应、空间分辨率、校准因子、差分电场抑制能力4个方面对探头进行了测试分析。结果表明:文中设计的探头的传输增益达到-20 dB,空间分辨率达到900μm,有良好的差分电场抑制能力,该探头可用于超宽带下的PCB板与较复杂集成电路等场景的测量工作。
The current active probe,whose detection frequency is mainly concentrated in the low frequency band,can t meet the detection requirements of the high frequency band.Therefore,a small,high-bandwidth,non-contact active magnetic field probe was proposed.The active magnetic field probe is made of a multilayer printed circuit board(PCB).An active amplifier module and its supporting power management chip were added to the passive probe to improve the transmission gain of the ultra-wideband type probe.The probe was tested and analyzed from four aspects:frequency response,spatial resolution,calibration factor,and differential electric field suppression capability.The results show that the designed probe has a transmission gain of-20 dB,a spatial resolution of 900μm,and is of good differential electric field suppression.The probe can be used for ultra-wideband PCB board and more complex integrated circuit measurements.
作者
陈志坚
王雨晨
黄鹏程
邵伟恒
叶长青
方文啸
黄云
CHEN Zhijian;WANG Yuchen;HUANG Pengcheng;SHAO Weiheng;YE Changqing;FANG Wenxiao;HUANG Yun(School of Electronic and Information Engineering,South China University of Technology,Guangzhou 510640,Guangdong,China;Electronic Produce Reliability and Environmental Testing Research Institute,The Fifth Institute of Ministry of Industry and Information Technology,Guangzhou 510610,Guangdong,China)
出处
《华南理工大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2021年第6期131-140,共10页
Journal of South China University of Technology(Natural Science Edition)
基金
国家自然科学基金资助项目(62001123)
广东省重点领域研发计划项目(2020B010179002,2018B010142001)
广东省自然科学基金资助项目(2018A030310360)
华南理工大学中央高校基本科研业务费专项资金资助项目(2019XX16)。
关键词
有源磁场探头
超宽带
传输增益
频率响应
空间分辨率
校准系数
差分电场抑制能力
active magnetic field probe
ultra-wideband
transmission gain
frequency response
spatial resolution
calibration factor
differential electric field suppression capability
