基于混合算法优化太赫兹波段的开口共振器

Optimization of a terahertz Split-Ring Resonator by using hybrid optimization algorithm

摘要:

开口共振器是电磁超材料的基本单元结构之一。本文应用基于微分进化策略和蚁群优化的混合算法，对在太赫兹频段下开口共振器的结构参数进行设计，以降低其回波损耗。数值模拟结果表明，在1.04 THz~1.16 THz内，优化后结构所得的回波损耗(|S11|)下降了50%，验证了本文优化设计方法的正确性和可行性，对太赫兹超材料的结构设计具有一定的参考意义。

Abstract:

The Split-Ring Resonator(SRR) is one basic structure of metamaterial. An hybrid optimization algorithm is employed to optimize the structure of a SRR for a lower return loss (|S11|) in the terahertz regime. Simulation results show that the return loss of the optimized structure is lowered by about 50% than that of the original structure in 1.04 THz–1.16 THz. This work may be useful to the design of the terahertz metamaterial structures.