基于粒子群算法的环形天线的优化设计-易迪拓培训.PDF

基于粒子群算法的环形天线的优化设计 李文涛 缪志华 蒋守明 史小卫 （西安电子科技大学天线与微波技术重点实验室 西安 710071) liwentao_xa@163.com 摘 要：本文研究了一种新的基于复合左右手传输线天线，通过移除不必要的串联电容，不仅可以减小天线的体积而且可以 降低天线结构的复杂性。进一步，本文将粒子群算法(PSO)和HFSS 软件相结合对该天线进行优化设计，并制作具有不同单 元数目的天线。结果显示了所设计天线无限波长谐振特性，但与传统天线相比，该天线具有与物理尺寸无关，低交叉极化， 全向辐射等特性。实验结果表明PSO/HFSS 方法是天线优化设计中的一种有效的方法。 关键词：粒子群优化算法，复合左右手传输线，微带环形天线，无限波长 Optimal Design of Ring antenna Based on Particle Swarm Optimization LI Wen-tao MIAO Zhi-hua JIANG Shou-ming SHI Xiao-wei （National Key Laboratory of Antenna and Microwave Technology, Xidian University, Xi’an 710071, China ） Abstract: A novel infinite wavelength microstrip ring antenna supported by the composite right/left-handed (CRLH) metamaterial transmission line is presented. By taking away the nonessential series capacitance, both the size and the structure complexity of the antenna have been reduced. Furthermore, linked with HFSS, PSO is used to design an infinite wavelength microstrip ring antenna. Antennas with different number of unit-cells are designed and fabricated to demonstrate the features of the infinite wavelength resonance. Compared with the traditional antenna, the proposed antenna has the advantages of undependable of physical size, low cross polarization and omni-directional radiation. The experimental results show that the PSO/HFSS method is an effective method in the antenna design. Keywords: Particle swarm optimization (PSO); Composite right/left-handed transmission line (CRLH TL); Microstrip ring antenna; Infinite wavelength 1 引言 需要发展一种有效且更为普遍的优化方法。近年来 基于进化的各种智能算法，如遗传算法和粒子群算 近年来，左手媒质(metamaterials) ，即等效介电 法得到了很快的发展，并有效地应用于电磁场领域 常数和等效磁导率同时为负的人工媒质，因其新颖 的特性而在科学和工程领域引起了广泛的关注[1,