虚拟负载端口对Rotman透镜性能影响的定量研究

利用边界积分方程法与分块法相结合的方法分析了Ｒｏｔｍ ａｎ 透镜这一重要的多波束形成网络，并定量研究了虚负载端口轮廓和端口宽度对透镜输出端口幅度起伏、相位线性等性能的影响，给出了虚端口设计的一般原则，这为Ｒｏｔｍ ａｎ 透镜的优化设计提供了理论方法和参考依据．

Quantitative study of effects of dummy-loaded ports on Rotman lens performance

Rotman lens, a kind of improtant multiple beamforming network, is analyzed by the boundary integral equation method along with the segmentation method. Effects of the contour and widths of the dummy loaded ports on the lens performances such as the amplitude ripple level and phase distribution across the output ports are investigated. Results show that the appropriate design of the dummy loaded ports is very improtant and some general design principles are drawn out from the results. This paper presents an efficient method for the analysis and optimization of Rotman lenses.