王永强,刘秉奇,朱博林.一种基于改进秃鹰搜索算法的复合类像素天线设计方法[J].电测与仪表,2025,62(7):58-68. WANG Yongqiang,LIU Bingqi,ZHU Bolin.A Design Method of Composite Pixel-like Antenna Based on Improved Vulture Search Algorithm[J].Electrical Measurement & Instrumentation,2025,62(7):58-68.
一种基于改进秃鹰搜索算法的复合类像素天线设计方法
A Design Method of Composite Pixel-like Antenna Based on Improved Vulture Search Algorithm
The performance of UHF antennas is crucial to the detection effect of UHF sensors. UHF composite antennas integrate different fractal structures, striving to retain the advantages of multiple structures. However, there are many variables to be optimized for composite antennas, and using traditional parameter scanning methods is time-consuming and laborious. In this paper, HFSS software and MATLAB software are used for joint simulation, greatly improving the optimization efficiency of composite antennas. The composite antenna described in this article combines the butterfly and Sherbinsky triangle structures, and draws on the design ideas of pixel antennas. The sub triangles in the Sherbinsky triangle are treated as pixel like units, and the operations of filling or removing the copper layer are performed, enriching the antenna radiation layer design. This paper also proposes an improved bald eagle search algorithm, which combines SPM chaotic mapping, Brownian motion, and dynamic search step size. This method not only retains the good convergence of the original algorithm, but also partially improves the global search ability. After joint simulation and optimization, the UHF composite antenna is tested in the laboratory. The results show that the VSWR of the composite antenna is less than 3 in the frequency band range of 0.983 9 GHz to 3 GHz, close to 2 in the frequency band range of 1.643 8 GHz to 2.375 8 GHz, and less than 2 in most frequency bands of 1.127 9 GHz to 1.487 9 GHz and 2.375 8 GHz to 3 GHz, which meets the design expectations.