Compact Dual-Band Dual-Sense Circularly Polarized Fragmental Patch Antenna Optimized by Improved Simulated-Annealing-Based Algorithm

IF 3.5 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC IEEE Open Journal of Antennas and Propagation Pub Date : 2024-09-19 DOI:10.1109/OJAP.2024.3463794

Tianyu Shu;Bowen Feng;Long Zhang;Chuyue Chen;Hui Chen;Yaling Chen;Qinyu Zhang

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Abstract

This study presents a compact dual-band dual-sense circularly polarized (CP) fragmental patch antenna that advanced by an improved simulated-annealing-based optimization algorithm. This design replaces truncated corners of traditional truncated patch antennas with fragmental structures, generating dual-band dual-CP radiation with a small frequency ratio and a high front-to-back ratio. The proposed optimized framework tackles the multi-objective optimization problem through hierarchical optimization to achieve an optimal balance among various performance metrics. Furthermore, the simulated annealing is improved using a matrix-based dynamic step-size perturbation mechanism and a nested cyclic process, averting premature convergence and ensuring multifaceted objective enhancement. The measurement results reveal that the proposed antenna can operate with a small frequency ratio of 1.07, providing left-hand CP radiation from 4.99 to 5.02 GHz and right-hand CP radiation 5.34 to 5.41 GHz, respectively. This compact cost-efficient design demonstrates potential for diverse antenna applications.

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基于改进的模拟退火算法优化的紧凑型双频双感应圆极化片状贴片天线

本研究介绍了一种紧凑型双频双感应圆极化（CP）片状贴片天线，该天线采用改进的基于模拟退火的优化算法。该设计用片段结构取代了传统截顶贴片天线的截角，从而产生了频率比小、前后比大的双频双CP辐射。所提出的优化框架通过分层优化来解决多目标优化问题，从而实现各种性能指标之间的最佳平衡。此外，还利用基于矩阵的动态步长扰动机制和嵌套循环过程对模拟退火进行了改进，避免了过早收敛，确保了多目标增强。测量结果表明，所提出的天线可以在 1.07 的小频率比下工作，分别提供 4.99 至 5.02 GHz 的左侧 CP 辐射和 5.34 至 5.41 GHz 的右侧 CP 辐射。这种结构紧凑、成本效益高的设计展示了天线多样化应用的潜力。

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