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对近场测量系统中由于电缆摆动引起的相位测量误差进行了实验分析 ,利用定向耦合器对相位的误差信号进行了提取 ,并进行了相应的计算机处理 .结果表明 ,利用定向耦合器可以实现对该相位误差的修正 .由于结构简单 ,架设方便 ,该方法在近场天线测量中有较为广阔的应用前景
The error of the phase measurement in the near-field measurement system caused by the cable wobble is experimentally analyzed, the phase error signal is extracted by the directional coupler, and the corresponding computer processing is carried out. The results show that the use of directional coupler Due to its simple structure and convenient erection, this method has a broad application prospect in the near-field antenna measurement