利用电连接器抑制RE及SI问题

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利用电连接器抑制RE及SI问题

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课程介绍

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讲师介绍：

马永健老师：马永健，高级工程师，深圳兰博滤波科技有限公司首席EMC专家。电子技术标准化研究所特聘EMC讲师，中国高科技产业研究会特聘EMC讲师，《电子元器件网》、《我爱方案网》特聘EMC专家，中国高科技产业研究会高级会员，中国电子学会高级会员，江西宜春学院客座教授。

课程介绍：

海、陆、空、天、网、电的电磁环境越来越复杂，电磁干扰概率越来越大，电磁干扰的后果越来越严重。作为搭接信号或者功率的电连接器对产品的EMC的影响也越来越受到了产品研发工程师们的重视。
作为电子行业的基础元器件之一，电连接器是无源器件，也是阻抗器件，还是一个多通路器件。无论数字信号、模拟信号，还是功率信号，一旦经由电连接器传递，就会有许多信号回路在其上相互叠加。

如果不按EMC规范进行选用和安装，就会发生串扰、干扰。
不只是影响着高速、高频信号的SI，同时也影响着电子、电气产品的传输通道上的差模环路面积和共模电压的大小，影响着RE及SI问题的抑制，影响着产品通过EMC标准的测试认证结果。

本课程运用通俗易懂的语言，结合插图和案例，从工程角度出发，探讨在什么技术平台上，哪个频率范围内，多少℃温度条件下，选型什么结构的连接器？分析电连接器安装中的共模、差模效应；阐明并不是只有高速或高频连接器才需要评估接触阻抗和特性阻抗；解说接入连接器后对原有信号有多少dB损耗的评估方法；明晰防止连接器插针上电流被意外分流的措施；阐述影响连接器的EMC性能的因素；最后简要介绍怎样利用连接器来保障SI，并防止ESD、Surge问题的发生。

课程要点

确定连接器插针的定义，分配针脚引线，以满足串扰最小、辐射最小、信号质量最优，确保信号回路的最优。

高速串行接口安排走线层面时，连接器的最小保留深度与过孔尾桩长度二者同时满足。

要使产品EMC认证测试中的RE项目试验获得通过，必须保证带金属外壳的电连接器与屏蔽电缆之间以及电连接器与金属机箱之间的RF搭接质量，使之构成等电位体。

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