摘要
在分析口径较小,焦距较短,带有复杂结构馈源的毫米波反射面天线时,不再适合采用高频近似方法,而采用全波矩量法求解,由于其巨大的计算量在PC机上求解还有很大的困难,提出一种计算毫米波反射面的新方法,充分利用计算模型轴对称这一几何特性,建立旋转体矩量法模型,并把该方法应用到设计微波传输系统中的小口径毫米波反射面天线上。由于在建模中考虑了馈源和主抛物面之间的互耦,计算结果和实验结果相当吻合。通过理论分析和实验,设计的口径为0.3 m天线在整个角域上满足了特定的方向图包络,达到了ETSI Class 3的高性能标准。
The analysis methods of mm - wave paraboloidal reflector antenna with complex feed, such as geometrical -optics and physical- optics method,are almost impossible. The full wave analysis, such as MOM, requires huge memory and CPU time,and is very difficult to be implemented in PC now. A novel approach for computing millimeter- wave reflectors is proposed in this paper. In this approach,computation model is created by means of the axisymmetry property and MoM based on the bodies of revolution is used to analyze this model. The computation result is compared with experiment result. It is shown that the proposed approach has very well accuracy and efficiency to analyze millimeter- wave antennas, and supports a new way to design high - performance microwave transmission antennas satisfying ETSI Class 3.
出处
《现代电子技术》
2009年第11期49-52,共4页
Modern Electronics Technique
关键词
旋转体矩量法
微波传输
毫米波天线
高频近似法
BoR MoM
microwave transmission
millimeter - wave antennas
high frequency approximation
