复合绝缘介质电缆转接器的设计与实现  

Design and Implementation of a Cable Connector with Compound Insulated Dielectric

作　　者：蔡易平[1] 胡孟春[1] 甫跃成[1] 

机构地区：[1]中国工程物理研究院核物理与化学研究所,四川绵阳621900

出　　处：《光纤与电缆及其应用技术》2017年第5期16-21,46,共7页Optical Fiber & Electric Cable and Their Applications

基　　金：中国工程物理研究院专项基金项目(902-310)

摘　　要：为减少粗细电缆转接处对精密快脉冲信号传输的反射影响,设计了一种锥形过渡多瓣复合绝缘介质结构电缆转接器。通过设计空气和实体介质多瓣复合结构,降低转接器绝缘介质的综合介电常数,避免转接器与电缆外导体的连接台阶,减少甚至消除了转接器与粗细电缆的连接补偿;结合高抗微补偿技术,解决转接器高频情况下实际应用中补偿垫片法的固有不足,实现转接器各径向截面的阻抗精密一致。经转接器设计仿真软件HFSS检测表明:在3GHz频带范围内电压驻波比最大为1.002 3,相应的反射系数约为0.12%。该电缆转接器用于SYV-50-17粗同轴射频电缆和SYV-50-7细同轴射频电缆实际转接时,转接处反射系数均明显小于1%。In order to reduce the reflection of the transmission of a precise fast pulse signal at the connecting position between thick and thin cables,a tapered-transition multi-peel compound dielectric structure cable connector is designed.By designing the multi-peel compound structure with air and solid dielectric,the comprehensive dielectric constant of the insulated dielectric is decreased,the connecting step between the connector and the outer conductor is avoided,and the connecting compensation between the connector and thick/thin cable is reduced or even eliminated.Combined with the high-impedance micro-compensation technology,the natural shortage of compensatory gasket method appearing when the connector is in high frequency situation is solved,and the precision and consistency of the impedances in all radial crosssections is realized.The detection using the simulation software HFSS shows that the maximum voltage standing wave ratio（VSWR）is 1.002 3in the range of 3GHz band,and the corresponding reflection coefficient is about 0.12%.The measured reflection coefficient,when the connector is used between the thick coaxial RF cable SYV-50-17 and the thin coaxial RF cable SYV-50-7,is obviously smaller than 1%.

关 键 词：电缆转接器 复合绝缘介质 高抗微补偿技术 

分 类 号：TM503.5[电气工程—电器]