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-20dB，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 -20dB, 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.