随着电子设备的智能性和稳定性的不断提高,电磁干扰(EMI)分析和电磁兼容(EMC)设计已经成为电子设备设计和制造的难点之一。本文以电磁辐射抑制为目的,选取普及型智能电子设备计算机为例,通过理论分析和实验手段分别研究了计算机电磁辐射源分布和辐射特性,针对不同的辐射源采取了相应的辐射抑制措施,并通过实验验证了辐射抑制措施的有效性,该研究可为智能电子设备的电磁兼容设计提供参考和依据 As the sophistication and stability of electronic devices continue to increase, EMI (electromagnetic interference) analysis and EMC design have become one of the challenges in the design and manufacture of electronic devices. In this paper, taking computer of universal intelligent electronic equipment as an example, the distribution and radiation characteristics of computer electromagnetic radiation sources are studied by theoretical analysis and experimental methods. Corresponding radiation suppression measures are taken for different radiation sources. The effectiveness of radiation suppression measures is verified by experiments. This research can provide reference and basis for EMC design of smart electronic devices