非线性媒质无源交调电平预测

无源互调(PIM)作为地面基站天线、卫星天线系统中一种重要的干扰因数,在PIM问题的研究中,功率电平的预测是一个难点。文章对两种预测方法进行了深入的比较研究,建立了数学模型,并通过计算机仿真获得了在不同输出测量误差及相同输入工作电压情况下两种方案的3、5、7阶PIM的预测误差;通过与相关参考文献中实际测量值的比较分析,探讨了这两种预测方案的合理性、有效性。

Prediction Method Analysis of PIM Power Level in Nonlinear Medium

Passive intermodulation (PIM),as an important interference affection in base station and satellite antenna systems was widely recognized.Prediction of the PIM power level is one of difficult points in the PIM studies.Two prediction methods of PIM power level were compared and analyzed.The mathmatical model was set up,and the measurment errors of 3,5,7 order PIM were obtained by the two methods under different output measurement errors and same input voltage through computer simulation.The validities were discussed by comparing our data with the actual measurment data in other relative paper.