基于电磁兼容的高速传输电连接器结构优化

发布时间：2018-01-18 07:31

本文关键词：基于电磁兼容的高速传输电连接器结构优化　出处：《微波学报》2017年06期 　论文类型：期刊论文

【摘要】：针对目前高速传输电连接器插头电磁兼容性能较差的现状,提出了改进结构以增强其电磁兼容性能。结构改进为插头对接端增加屏蔽罩结构,并根据波导理论评估了当屏蔽罩对接端厚度h=0.28 cm时,电连接器能增加38.5 d B的屏蔽效能。对改进前后的电连接器插头进行电磁场屏蔽效应仿真,仿真结果表明结构改进使屏蔽效能增加了21.9 d B,验证了结构改进的可行性。对改进前和改进后的结构进行了静电抗扰度试验和电磁屏蔽试验,试验结果表明:结构改进前空气放电和接触放电引起的接触件两端电压分别为37.6 V、14.3 V,结构改进后空气放电和接触放电引起的接触件两端电压分别为4.8 V、3.3 V,结构改进后插头端面屏蔽效能为15.2 d B。基于电磁兼容的高速传输电连接器结构优化为电连接器设计、电磁兼容性能升级提供了参考。
[Abstract]:In view of the poor EMC performance of high speed transmission connector plugs, an improved structure is proposed to enhance its EMC performance. Based on the waveguide theory, the thickness of the butt end of the shield is estimated to be 0.28 cm. The electrical connector can increase the shielding efficiency of 38.5 dB. The electromagnetic shielding effect of the plug before and after the improvement is simulated. The simulation results show that the structural improvement increases the shielding efficiency by 21.9 dB, which verifies the feasibility of the structural improvement. Electrostatic immunity test and electromagnetic shielding test are carried out for the structure before and after the improvement. The experimental results show that the voltage at both ends of the contact caused by air discharge and contact discharge is 37.6 V / 14.3 V respectively. The voltage at both ends of the contact caused by air discharge and contact discharge is 4.8 V / 3. 3 V, respectively. The shielding efficiency of the end face of the plug is 15.2 dB after the structure improvement. The structure optimization of the high speed transmission electrical connector based on electromagnetic compatibility provides a reference for the design of the electrical connector and the upgrading of the EMC performance.
【作者单位】：贵州师范大学机械与电气工程学院;
【基金】：贵州省联合基金(LH2014-7043)
【分类号】：TM503.5;TN03
【正文快照】： 引言随着时钟频率不断提高,电子设备的电磁兼容能力需要进一步提高,电子设备需要越来越高的抗电磁干扰能力。电连接器作为整个电子设备的信息接口,各种电磁干扰在接口处尤为严重,因此,在信息系统设计时,通常采用滤波电路、线路布局、良好的接地技术来降低外部电磁干扰,但随着

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