WCDMA高增益天线副波瓣高铁覆盖研究

Research on High Speed WCDMA High Gain Antenna Side Lobe Coverage

在高铁覆盖中,一般采用高增益定向天线进行覆盖。高增益天线虽然增益大,对远端的覆盖好,但高增益天线也存在主波瓣角度小、对副波瓣抑制度大的特点。而高铁动车组车体损耗大、速度快,对于副波瓣覆盖路段能否覆盖好需做详尽的研究分析。基于此,对WCDMA高铁覆盖中高增益定向板状天线副波瓣的覆盖进行分析,以助于高铁覆盖时的天线调测和优化。

High gain directional antennas are commonly used in high speed railway coverage. Although thegain of antenna with high gain, good coverage of remote, but high gain antenna also exist the characteris-tics that main lobe angle is small, and the side lobe suppression ratio. But the high iron loss of EMUs,fast speed and for side lobe covering sections can cover needed to make a detailed study and analysis.Based on this, WCDMA high speed rail covering minor lobe antenna of high gain directional board was an-alyzed, which contribute to the high iron cover the antenna measurement and optimization.