CMMB系统局端设备的电磁兼容限值和试验方法研究

Research on Central Office Equipment's Eletromagnetic Compatibility Tolerance and Testing Method in CMMB System

随着移动多媒体广播(CMMB)系统标准和相关设备标准的颁布实施,移动多媒体广播电视节目已经开始在全国传输和播出。与此同时,移动多媒体广播的电磁兼容特性也逐渐成为行业内外关注的焦点。本文从电磁骚扰、电磁敏感度、电磁辐射、电磁兼容设计等方面对移动多媒体广播系统设备的电磁兼容特性进行了初步探讨,提出了今后的重点研究方向,并以例举的方式讨论了移动多媒体广播局端设备、室内覆盖设备在电磁兼容标准和评价测试方面应关注的问题。

With issue and implementation of standards of CMMB system and relevant equipment, CMMB programs start to be in air in China, and CMMB's electromagnetic compatibility characteristics become the industry focal point.From aspects of electromagnetic interference, sensibility, radiation and compatibility, the paper approaches CMMB equipment's electromagnetic compatibility characteristics, and gives study directions from now on.By giving examples, the paper dicusses problems about electromagnetic compatibility standard and testing method of central office equipment and in-home coverage device in CMMB.