级联双端口或四端口的传输特性.术语和定义的背景

[中文适用范围]： 传输链的组件能够分离并单独测试是重要且实用的。为此，需要明确定义的接口和测量技术，包括商定的术语和定义。该技术报告有两个主要目标。它为在世界范围内描述双端口或四端口的传输特性而使用的基本术语和定义达成一致奠定了基础。该报告在经典四端口理论与散射矩阵表示法之间架起了一座桥梁，后者基于双端口输入和输出处的入射和反射功率波平方根。最后，表明这两个概念通过简单的方程联系在一起，并且在根本上是相同的。四端口理论最初是为语音和载波频率技术及传输开发的，后来用于微波，但两者可用于整个频率范围。 [外文原描述]： IEC/TR 62152:2009(E) lays the foundation for agreement on the fundamental terms and definitions to be used world wide in describing the transmission properties of a two-port or quadripole end and builds a bridge between the classical quadripole theory and the scattering matrix presentation which is based on incident and reflecting square root of power waves at the input and output of a two-port. This second edition cancels and replaces the previous one and introduces some technical improvements. Important terms and definitions have been added. Some of the terms are better described in the German language and therefore many countries have originally taken terms and definitions from German and translated them into their own language.