移动通信基站双极化智能天线扇区功率比

SPR with Dual Polarization Smart Antenna of Mobile Communication Base Station

根据移动通信基站天线广播波束要求,构建了基站双极化智能天线阵的空间三维方向图函数。由此,计算了工作频段内基站天线不同水平面半功率波瓣宽度、不同前后比、不同垂直面电下倾和机械下倾角时,基站天线的扇区功率比和增益。结果表明,基站天线水平面半功率波瓣宽度和前后比是影响扇区功率比的决定因素;基站天线垂直面机械下倾的扇区功率比优于电下倾的扇区功率比。

The three-dimensional pattern function with dual polarization smart antenna array of base station is struc- tured according to specifications on the broadcast beam pattern. Thus, the sector power ratios （SPR） and gains with antenna array of base station are calculated when different the half-power beam width （BW） in azimuth direction, the front-to-back ratios （FBR） , electrical and mechanical down-tih in pitch direction within the working frequency bands . The results indica- ted that, BW and FBR of base station antenna pattern are major causes of an effect on SPR. SPR with mechanical down-tih of the antenna has an advantage over electrical down-tih of that.