宽带传输线变压器的分析与设计

An analysis and design of broadband transmission-line transformer

研究了变换比为 1∶n2 ( n为整数 )的宽频带传输线变压器 ,给出了考虑线圈互耦的等效电路模型 ,分析了其阻抗变换特性。然后在此基础上 ,通过实验调试 ,研制了工作频带为 30 MHz～ 45 0 MHz、变换比为 1∶ 1 .6的传输线变压器 。

Beginning with the broadband transmission line transformer with 1∶n 2 impedance transformation, its equivalent model with mutual coupling between transmission lines taken into account is given, and its characteristics for impedance transformation is analyzed. Based on it and through experiment, the transmission line transformer with 1∶1.6 impedance transformation at frequency 30MHz～450MHz is designed. Some guidelines in the design of broadband transmission line transformer with any impedance transformation is obtained.