Evolutional Design of Waveguide Slot Antenna With Dielectric Lenses
Evolutional Design of Waveguide Slot Antenna With Dielectric Lenses
复制标题
介质透镜波导缝隙天线的演化设计
DOI：
10.1109/tmag.2011.2176320
复制
发表时间：
2012
影响因子：
2.1
通讯作者：
H. Igarashi
中科院分区：
文献类型：
--
作者：
K. Itoh;K. Miyata;H. Igarashi
本文提出了一种基于进化优化的介质透镜波导缝隙阵列天线的设计方法。采用实数编码基因的微遗传算法作为优化方法，采用时域有限差分法（FDTD）求解目标函数。本研究的目的是建立上述天线的设计方法，通过优化缝隙长度和偏移参数。在天线口径分布的优化，它表明，优化口径场变得足够均匀，和旁瓣电平（SLL）的改善相比，与传统的天线。另一种优化方法是直接用阵列因子来控制天线的副瓣电平，从而设计出低副瓣天线。利用所提出的方法，对目标天线进行了优化，使其满足给定的SLL。结果表明，该设计方法是一种很有前途的工具，用于设计加载介质材料的天线。
This paper reports novel design method of waveguide slot array antenna with dielectric lenses by using the evolutionary optimization. We adopt the micro-genetic algorithm (MGA) with the real-coded gene as the optimization method and the finite-difference time-domain (FDTD) method to evaluate the objective function. The purpose of this study is to establish the design method of the above antenna by optimizing slot length and offset parameters. In the optimization of the antenna aperture distribution, it is shown that the optimized aperture field becomes sufficiently uniform, and the side-lobe levels (SLL) are improved in comparison with those of conventional antennas. Another optimization in which the objective function is evaluated by the array factor controls directly the side-lobe levels, to design low side-lobe antennas. By using the proposed method, the target antenna is optimized to satisfy the given SLL. It is confirmed that the proposed design method is a promising tool for designing the antennas loaded with dielectric materials.