一种新型微带端射平面树形天线的自动设计

Automated design of a novel microstrip plane tree-shaped antenna with end-fire characteristic

摘要:

将一种新的优化算法—自然树生长竞争算法，用于天线优化，结合基于有限元方法(FEM)的电磁场数值仿真软件，实现天线的自动设计，并设计出新型微带端射平面树形天线。在5.77 GHz~5.93 GHz频段内S11<-10 dB，辐射方向保持良好的端射特性，且在5.8 GHz的端射增益为5.4 dBi。根据仿真结果，制作一个原型天线并对其进行测试，测试结果与仿真结果吻合良好。

Abstract:

The Competitive Algorithm of Simulating Natural Tree Growth, a novel optimization algorithm, was applied to antenna design by calling the numerical electromagnetic simulation software based on Finite Element Method(FEM) to implement the automated antenna design, and then a novel microstrip plane tree-shaped antenna with end-fire characteristic was designed. This antenna maintained the end-fire radiation pattern with S11<-10 dB in the frequency band from 5.77 GHz to 5.93 GHz, and the end-fire gain is 5.4 dBi at the frequency of 5.8 GHz. According to the simulated result, a prototype of the antenna was fabricated and tested. Good accordance was obtained between simulated and measured results.