扩谱方法和磁性器件在机载设备EMC上的应户  

Application of Spread-Spectrum Method and Ferrite Magnetic Device on EMC Design for Airborne Equipment

作　　者：惠渭锋[1] 杨超[2] 李恒毅[1] 

机构地区：[1]中航工业飞行自动控制研究所,陕西西安710065 [2]西安应用光学研究所,陕西西安710065

出　　处：《电源技术应用》2014年第10期1-4,共4页Power Supply Technologles and Applications

摘　　要：分析了影响飞机上某电台接收频段的噪声源和耦合路径，然后针对产生干扰源的设备，在其内部加入铁氧体磁珠和扩谱芯片，利用铁氧体磁珠优良的吸收电源的高频干扰特性和扩谱芯片可以有效地将干扰频谱上的高频能量尖峰削低的特性，有效地解决了机上电台接收频段易被干扰的问题。Through the analysis of the interference source and the coupling way that affect the receiving frequency band of some airborne station,the equipment causing interference is located. Spread-Spectrum chip that can effectively reduce radiated emissions by depressing spectrum peaks and magnetic bead that can well absorb the high frequency interence energy of power supply are installed in the interference equipment,that effectively solve the problem of the airborne station disturbed.

关 键 词：机载设备 电台 EMI EMC 磁珠 

分 类 号：TM27[一般工业技术—材料科学与工程]