国外ATG网络进展及余割平方波束ATG地面天线设计

Progress of ATG Network Abroad and Design of ATG Ground Antenna with Cosecant Squared Beam

欧美已部署ATG网络并在向5G升级,飞机上旅客的上网体验有望提升,航空运营及服务的新模式有望出现。针对新一代ATG地面基站天线长距离、高增益覆盖的需求,在原理分析的基础上,提出以余割平方曲线为目标方向图函数,用粒子群算法迭代出馈到垂直阵列中每个辐射单元的幅相权值、采用威尔金森功分器及调整馈电线路在功分板上实现上述权值,从而实现垂直面上的余割平方方向图,最后给出经实用验证的Massive MIMO天线性能。

In order to enhance the experience of passengers with Internet access in the air,air-to-ground(ATG)has been deployed by European and American airlines as a new paradigm for aviation operation and service,and moving forward to 5 G.To meet the requirements of the new generation ATG ground base station antenna for long-distance and high-gain coverage,based on the principal analysis,a cosecant squared curve was proposed as the pattern objective function to realize the cosecant squared pattern on the vertical plane.Specifically,the amplitude-phase weight values of each radiating element in the vertical array were obtained by the iterative calculation of the particle swarm optimization(PSO)algorithm.These weights were achieved on the power distribution board by using the Wilkinson power divider and adjusting the feeder line.