粗细同轴射频电缆低反射系数连接器的物理设计

在脉冲辐射信号测量中,经常需要对粗细同轴射频电缆进行连接,为了保证传输的脉冲信号畸变尽可能小,需要设计合适的低反射系数连接器。针对同轴射频电缆SYV-50-7连接SYV-50-17的情况,按照精密同轴元件的三项基本设计原则、电磁波传输理论和射频电缆的参数理论,采用内外锥顶尖重合法,设计了渐变过渡型连接器。计算表明通过优化粗细电缆连接器物理设计参数,连接器主体物理设计理论反射系数远小于0.3%是可能的。

The Physical Design of Low Reflectivity Connectors for Thick and Thin RF Coaxial Cables

In the measurement of pulse radiation signal, it is often necessary to connect a thick coaxial cable to a thin one. In order to reduce the signal deformation as much as possible, it needs to design appropriate connector with a low reflectivity. In the case of connect Type SYV-50-7 RF coaxial cable to Type SYV-50-17 cable, on the basis of three basic design principles, electromagnetic wave transmission theory, and the parameter theory of RF cables, the technique which is named ＂concurrent inner ; outer conic nodes＂ is adopted to design a gradual-transitional connector. As is shown in the result of computation, it is possible for the theoretical reflection coefficient of the main part of the connector to be much lower than 0.3% through optimizing the physical design parameters of the thick and thin connectors.