移动通信基站天线测试中时域门最佳设置研究

Optimal setting of time domain gate in antenna testing of mobile communication base station

针对移动通信基站天线测试系统场地反射波的干扰问题,在此提出了一种基于矢量网络分析仪时域门设置的反射波消除方法。首先分析了不同种类的基站天线和测试时天线所处的状态参数,然后通过分析其对时域门选择的影响,得出了时域门设置需要满足的条件,最后综合权衡时域门参数的设置,将时域门设置到最佳状态。实测数据表明,该方法能够有效地消除测试场地反射波的影响,保证被测天线的测量准确性,仿真验证了方法的正确性与有效性。

For the reflection wave interference in a mobile communication base station antenna test system, a reflection wave elimination method based on the time-domain gate setting of vector network analyzer is proposed in this paper. The differ-ent types of base station antennas and antenna state parameters under test are analyzed. The satisfied condition needed for time-domain threshold setting is obtained by analyzing the influence of antenna type and state parameter on time-domain threshold se- lection. By balancing the time-domain threshold parameter setting, the time-domain threshold is set to the best state. The mea- sured data indictes that the method can eliminate the interference of reflection wave in test site and ensures the accuracy of an-tenna testing. The effectiveness and correctness of the method were verified by simulation experiment.