基于双魔T六端口反射计的自动化设计

Automation Design of Six-port Reflector Based on Double Magic-T

根据六端口反射计工作原理,对基于双魔T的六端口测量系统进行自动化设计;通过放大器和A/D转换电路对输出端口的检波电压进行采集,根据相对功率法求解系统常数,完成系统的校正,然后接入待测负载,由三个状态下的系统常数和端口功率构建线性方程组,编程求解确定负载的反射系数,并画出状态圆对测量结果加以验证。试验结果表明,该系统不仅保证了反射系数的精度,而且测量效率得到了显著的提高。

According to the operational principle of six-port reflector, the automation of double magic-T based six-port measuring system is designed. The detecting voltage was collected through amplifier and A/D conversion circuit. System constants are determined by the relative power method. Therefore the system correction is accomplished. Then, with the test load connected, the linear equations are established by system constants and port power under three states the reflection constant of deterministic load is resolved by programming, and the state circles are drawn for verification. The experimental result shows that the accuracy of reflection coefficient is ensured by the system and, the measuring efficiency is greatly enhanced.