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引用次数: 1

摘要

介绍了多波束介质透镜天线的设计过程。考虑了两种dla结构,即由喇叭天线激发的双层圆层透镜和由印刷馈源阵列激发的形状均匀的平底透镜。天线的合成使用基于严格数学方法的高效内部软件在二维公式中进行(前者为mie型级数解,后者为Muller边界积分方程)。结果表明,同时优化透镜和馈电结构参数,可以使用标准的低损耗介质材料设计出具有更好性能特性(轴向指向性和转向能力)的波束开关DLA。
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Design of dielectric lens antennas for multibeam applications
Paper describes designing procedure of dielectric lens antennas (DLA) for multibeam applications. Two configurations of DLAs are considered, namely: two-shell circularly-layered lens excited by a horn antenna and shaped homogeneous flat-bottom lens excited by an array of printed feeds. Synthesis of the antennas is carried out in the 2-D formulation using highly-efficient in-house softwares based on rigorous mathematical approaches (Mie-type series solution for the former and Muller's boundary integral equations for the latter). It is demonstrated that simultaneous optimization of lens and feeding structure parameters enables one to design a beam-switching DLA with improve performance characteristics (boresight directivity and steering ability) using standard low-loss dielectric materials.
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