低阻抗同轴电缆的制备与可调电阻测试法

Preparation and adjustable resistance test method of low impedance of coaxial cable

在射频功放运用中经常会涉及到使用一些低阻抗的同轴电缆的情况,如制作平衡-非平衡轮换的巴伦,以及特定阻抗变换电路。研究了根据标准同轴电缆的结构,通过改变部分关键结构参数,制备任意非标准的低阻抗同轴电缆技术方法;通过同轴电缆中的电磁传播理论分析和推导,提出准确测试低阻抗同轴电缆的可调电阻测试法。

In order to get the effect of impedance transformation,it often involves selecting the low impedance coaxial cable to make balun when making the RF power amplifier. For the coaxial cable,according to the standard configuration,the article will presents the key parameters of changing the structure to obtain a low impedance coaxial,then theory test methods are deduced,and we get the simple method of low impedance coaxial cable testing and validation by using adjustable resistor.