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一、概述电磁兼容性(EMC)是一门涉及多种学科的边缘科学,本文所讨论的范围限于系统工程无线电设备之间的相互干扰问题,内容以军事无线电设备为主,也涉及电磁能量对生物(人)的影响。处于电磁环境中的电子设备无意造成的相互干扰主要途径有:天线之间的电磁耦合;电缆之间的串扰;信号源的直接辐射;以及各种电子元件和电缆等的接收。这些不需要的电磁能量都会对设备的正常工作带来威胁。因此,这些问题必须预先了解并在系统设计中予以考虑,以利于改善总的系统性能。
I. INTRODUCTION Electromagnetic compatibility (EMC) is an edge science involving many disciplines. The scope of this article is limited to the mutual interference between system-engineering radio equipment. The content is mainly military radio equipment, and also involves the electromagnetic energy pair Biological (human) effects. The main ways in which the electronic devices in the electromagnetic environment inadvertently cause mutual interference include: electromagnetic coupling between the antennas; crosstalk between the cables; direct radiation of the signal source; and reception of various electronic components and cables. These unwanted electromagnetic energy can pose a threat to the normal operation of the equipment. Therefore, these issues must be understood in advance and considered in the system design, in order to improve the overall system performance.