一种新颖的分形超宽带天线

A Novel Ultra-Wideband Fractal Antenna

本文提出了一种新颖的花瓣分形超宽带微带天线结构,并采用共面波导对天线进行馈电。采用商用电磁场数值仿真分析软件ANSYS HFSS对天线的性能进行了仿真优化分析,结果表明,通过增加花瓣分形结构的迭代次数以及优化有限接地面的结构,天线可以获得良好的阻抗带宽。采用PCB印制板工艺对天线进行了加工制作。测试结果表明,天线工作频带为3.1GHz~14.65 GHz,相对带宽为129.9%,仿真结果与测试结果基本吻合,证明了天线设计的有效性。该天线可应用于超宽带(UWB)无线通信系统中,为超宽带天线的设计提供了新的思路。

A novel ultra-wideband(UWB)petal-shape fractal antenna fed by coplanar waveguide is proposed in this paper.The performance of the antenna is simulated and optimized by using the commercial numerical simulation software ANSYS HFSS.The simulation results show that the antenna can obtain good impedance bandwidth by increasing the iteration times of the petal fractal structure and optimizing the structure of the finite ground plane.The antenna is fabricated using the printed circuit board(PCB)process.The test results show that the working frequency band of the antenna is 3.1GHz to 14.65 GHz,and the relative bandwidth is 129.9%.The simulation results are in good agreement with the test results,which proves the effectiveness of the antenna design.The antenna can be used in UWB wireless communication systems.This paper provides a new idea for the design of UWB antennas.