ABSTRACT

This paper presents the design of Meander and Koch Curves based Wearable Hybrid Fractal Antenna (MKWHFA) using Particle Swarm Optimization (PSO) and Iterative Function System (IFS). The proposed antenna design combines two fractal geometries i.e. Meander and Koch curve to enhance its performance characteristics. It uses the Jean material as a substrate having a dielectric constant of 1.7 and height 1 mm. The patch and the ground plane made using the copper tape. ANSYS/Ansoft HFSS V13 software is used for simulating and designing for the proposed MKWHFA. Parametric analysis on this antenna’s ground plane is done to achieve the desired resonant frequency, gain, and bandwidth. A mathematical model is derived using the IFS to generate the fractal geometry in MATLAB software. The feed position of MKWHFA optimized using PSO technique. The MKWHFA with Meander-Koch slot resonates at 2.4508 GHz, 5.4005 GHz, 6.6503 GHz, and 8.0002 GHz with corresponding gains 5.61 dB, 8.55 dB, 5.07 dB and 3.24 dB, bandwidths 291 MHz, 94 MHz, 222 MHz and 310 MHz respectively. The proposed MKWHFA fabricated and tested in the laboratory. There is a good agreement between the simulated and experimentally measured results.

摘要

本文利用粒子群算法（PSO）和迭代函数系统（IFS），提出了基于曲折曲线和科赫曲线的可穿戴混合分形天线（MKWHFA）的设计。所提出的天线设计结合了两种分形几何形状，即Meander和Koch曲线，以增强其性能特征。它使用让材料作为介电常数为1.7，高度为1毫米的基板。使用铜带制作的贴片和接地层。ANSYS / Ansoft HFSS V13软件用于拟议的MKWHFA的仿真和设计。对该天线的接地平面进行参数分析，以实现所需的谐振频率，增益和带宽。使用IFS导出数学模型以在MATLAB软件中生成分形几何。使用PSO技术优化了MKWHFA的进料位置。具有Meander-Koch时隙的MKWHFA在2.4508 GHz，5.4005 GHz，6.6503 GHz和8.0002 GHz处产生谐振，相应的增益分别为5.61 dB，8.55 dB，5.07 dB和3.24 dB，带宽分别为291 MHz，94 MHz，222 MHz和310 MHz。建议的MKWHFA在实验室中制造和测试。在模拟结果和实验测量结果之间有很好的一致性。