一种快速分析毫米波反射面天线的新方法

Analyses of millimeter-wave reflector antennas using a novel fast method

利用计算模型轴对称这一几何特性,提出了一种计算毫米波反射面的新方法,建立了旋转体矩量法模型.为了进一步降低未知量的个数,采用混合基函数的方法,在几何结构较平坦的主反射面区域采用全域基函数,在结构较复杂的馈源区域采用分域基函数.计算结果表明该方法在分析毫米波天线时与全波矩量法和实际测量结果吻合,计算量大大降低.

A novel approach to computing millimeter-wave reflectors is proposed.In this approach,the computational model is created by means of the axisymmetry property and the MoM based on the bodies of revolution is used to analyze this model.To reduce the number of unknown quantities,the hybrid base functions are used,i.e.,the entire-domain base functions are applied in the main reflector with a flat geometry,and sub-domain base functions in the complex feed source region.Computational results are compared with those obtained by the full-wave MOM and experiment.It is shown that the numerical results are in good agreement with the results obtained by the full-wave MOM and the measured data,and supports a new way to design high-performance microwave transmission antennas.