相控阵天线方向图的近场功率测量法研究

为解决相控阵天线测量场地受限、技术复杂、难以用于实际工作中的问题,提出了一种近场基于功率测量的方法,使用固定探头接收,利用被测天线自身扫描时接收到的功率值获得不同角度方向图数据,而无需测量相位。以线阵为例,阐述了测量基本原理和配相控制的流程,给出了插值计算公式,定性分析了误差来源和影响,仿真实验结果表明,该方法可有效逼近真实方向图。

Research on Power Measurement Method of Phased Array Antenna Pattern in Near-Field

A novel power measurement method is presented for the limited field,technical complexity,difficulty for practical during operation of the measurement of phased array antenna.Fixed probe is employed to receive.Pattern data from different angles is acquired while the AUT is scanning without phase measurement.Linear array is utilized to state the fundamental of the measurement and the flow of phase control.The interpolation calculation formula is given.Error sources and influences are analyzed qualitatively.Simulation result shows that this method can approach the real pattern effectively.