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针对球面共形微带天线带宽窄的缺陷,采用自适应差分进化算法结合矩量法成功实现对球面共形微带天线的优化设计。对自适应差分进化算法中的种群初始化、控制参数的选择等方面进行了详细的讨论。在搜索过程中,提出一种“先测向后定位”的搜索策略,首先采用粗优化方式找到控制天线性能基因的大致位置,然后在找到的位置进行细优化,进一步提高天线的性能。这种粗、细优化相结合的方式在保证优化效果的情况下,大大降低种群的数量,提高了优化效率。最后,分别优化出宽频带以及工作在双频点的球面共形微带天线,优化结果与仿真软件对比,验证了本文分析处理的正确性与有效性。
Aiming at the defect of the conformal microstrip antenna with narrow bandwidth, the optimal design of the conformal microstrip antenna with spherical conformal microstrip antenna is successfully achieved by adaptive differential evolution algorithm and moment method. In this paper, the population initialization, the choice of control parameters and so on in the adaptive differential evolution algorithm are discussed in detail. In the search process, we proposed a search strategy of “locate first and then locate” to find the general location of the control antenna performance gene by coarse optimization, and then fine-tune it in the found position to further improve the performance of the antenna. The combination of coarse and fine optimization can greatly reduce the population and improve the optimization efficiency under the condition of ensuring the optimization effect. Finally, we optimize the broadband and the spherical conformal microstrip antennas operating at the dual-frequency points respectively. The comparison between the optimization results and simulation software proves the correctness and effectiveness of the analysis and processing.