为无线系统选择射频连接器

　　为无线系统选择射频连接器

　　“无线”系统的爆炸式增长导致了射频连接器及其相关电缆的同时使用。这些组件日益成为多个电路板、天线和前端之间以及功率放大器（PAS）和天线之间的重要联系。它们有助于诸如蜂窝电话、无线数据网络和先进雷达和电子战（EW）系统等无线设备和系统的运作。

　　射频系统连接器传输信号从一个地方到另一个简单而重要的任务，很少或没有变化的信号（虽然在现实中即使有天线连接器和天线工程师经常因素损失0.2分贝/同轴连接器除了电缆衰减本身之间的高质量的射频电缆）。

　　There are a variety of connectors that are used for RF applications. Among the parameters that determine the best type for a given application are frequency range， Impedance， physical size， power handling， and cost. Recently， long-established connector types， such as the venerable BNC and the SO-239/PL-259， are being supplanted by connectors tuned to the priority characteristics of the latest wireless mass-market designs： smaller， designed only for low power， and providing excellent performance at 1 GHz+. The older connectors are not obsolete： they still are used in test equipment， rack and chassis designs， and installed base/legacy products.