1　引言在科学研究、生产实践的各个领域 ,由于存在干扰 ,电子设备的稳定度、精确度会受到直接的影响 ,严重时电子设备将不能正常工作。因此 ,从设备设计、制造、使用方式以及电子设备的工作环境等各个环节都不得不优先考虑抗干扰问题 ,对干扰的研究成为电子设备的重要课题。干 1 Introduction In all fields of scientific research and production practice, due to interference, the stability and accuracy of electronic equipment will be directly affected. In severe cases, electronic equipment will not work properly. Therefore, from the equipment design, manufacture, use and working environment of electronic devices and other links have to give priority to anti-interference problems, the study of interference has become an important issue of electronic equipment. dry