基于拓扑优化的多层双极化微带天线设计：带宽增强
Multilayer Dual-polarized Microstrip Antenna Design by Topology Optimization with Enhanced Bandwidth
浏览论文内容
中文总结 AI 辅助
该研究针对双极化微带天线带宽有限的问题，采用基于密度的拓扑优化方法，结合FR4叠层结构设计两款5.7 GHz附近天线，实现超40 dB隔离度和约10%带宽，仿真与实测性能吻合良好。
中文摘要 AI 辅助
双极化（DP）微带天线被用于无线系统中实现高效数据传输，但其带宽通常非常有限。本研究提出采用基于密度的拓扑优化方法设计带宽增强的双极化微带天线，构建同时考虑馈电端口匹配、端口隔离度及远场双极化性能的优化问题。为增强带宽，采用FR4叠层结构，同时优化两层铜箔。提出两款工作在5.7 GHz附近的天线设计，在高隔离度（超过40 dB）与增强阻抗带宽（约10%）间取得平衡。优化后的设计经实验验证，仿真与实测性能吻合良好。
英文摘要
Dual-polarized (DP) microstrip antennas are utilized in wireless systems for efficient data transmission. However, their bandwidth is typically very limited. In this contribution, we propose to design DP microstrip antennas with enhanced bandwidth using a density-based topology optimization approach. We formulate an optimization problem that simultaneously accounts for feeding port matching, the ports' isolation, and far-field dual-polarized performance. To enhance the bandwidth, we employ an FR4 stack-up, in which the copper on two layers is optimized simultaneously. We present two antenna designs operating around 5.7 GHz, which show a compromise in performance between a high isolation (more than 40 dB) and enhanced impedance bandwidth (around 10%). The optimized designs are experimentally validated, showing an excellent agreement between the simulated and measured performance.
