Two-Dimensional Topology Optimization of a Horn Antenna

• 作者: Huaxu Dan
• 来源期刊: 最优化(英文)
• 学科: 工学
• 关键词: Topology Optimization Horn Antenna MATERIAL
• 年，卷（期）: 2020,（3）
• 页码范围: 39-46
• 页数: 8页
• 分类号: TN9

摘要

A two-dimensional horn antenna is used as a model for topology optimization. In order to employ the topology optimization, each point in the domain is controlled by a function which is allowed to take values between 0 and 1. Each point’s distinct value then gives it an effective permittivity, either close to that of polyimide or that of air, two materials considered in this study. With these settings, the optimization problem becomes finding the optimal distribution of materials in a given domain, and is solved under constraints of reflection and material usage by the Method of Moving Asymptotes. The final configuration consists of two concentric arcs of air while polyimide takes up the rest of the domain, a result relatively unsensitive to the choice of constraints and initial values. Compared to the unoptimized antenna, a slimmer main lobe is observed and the gain boosts.