现代电子技术2024，Vol.47Issue(3)：12-17,6.DOI:10.16652/j.issn.1004-373x.2024.03.003
一种分段的超短波对数周期天线设计与实验
Design and experiment of segmented VHF log-periodic antenna
唐金彪 1李相强 1崔玉国 2乔小斌1
作者信息
- 1. 西南交通大学 物理科学与技术学院, 四川 成都 610031
- 2. 中国电波传播研究所 电波环境特性及模化技术重点实验室, 山东 青岛 266107
- 折叠
摘要
Abstract
The propagation mode of very high frequency(VHF)is mainly propagation over the line of sight,and this mode of propagation requires antennas with strong directivity and high gain.The log-periodic antenna is a kind of ultra-broadband medium gain antenna,which is very suitable for VHF communication.However,in the VHF band,the length of the conventional log-periodic antenna is relatively long,and its miniaturization is not high.In order to realize a miniaturized log-periodic antenna for VHF communication,a design scheme of segmented VHF log-periodic antenna is proposed in this paper.According to the application demand,the antenna length is reduced by segmentation design while satisfying the antenna gain,and the angle between the collection lines is adjusted to achieve antenna impedance matching.After the simulation design,the typical gain of the antenna in 30～70 MHz is greater than 8 dBi,and the length of the antenna is reduced to 7 m.The antenna is tested experimentally by the field test system based on the unmanned aerial vehicle(UAV)flight platform.The test results show that the voltage standing wave ratio(VSWR)of the antenna is less than 1.5 in the operating frequency range,and the radiation characteristics of the test and simulation are basically consistent.The proposed antenna has the characteristics of wide bandwidth,high gain and simple structure,which can meet the demand of VHF antenna in practical scenarios.关键词
超短波/对数周期天线/超短波天线/分段设计/天线测试/地面Key words
VHF/log-periodic antenna/VHF antenna/segmented design/antenna test/ground分类
信息技术与安全科学引用本文复制引用
唐金彪,李相强,崔玉国,乔小斌..一种分段的超短波对数周期天线设计与实验[J].现代电子技术,2024,47(3):12-17,6.
