一种小型化超宽带共形天线设计
Design of a Miniaturized Ultra-Wideband Conformal Antenna
宋道军 1张潇元 2王坤2
作者信息
- 1. 北方通用电子集团有限公司 江苏 无锡 214145
- 2. 中国人民解放军93145 部队 江苏 无锡 300000
- 折叠
摘要
本文设计了一款适用于5～6GHz频段的小型化超宽带共形天线,采用圆锥共形布局以适应弹头不规则性并满足性能需求.天线安装在载体顶部空心圆锥内,通过微带渐变巴伦和在螺旋天线底部设计1/4 圈的渐削过渡段实现超宽带特性.测试显示,天线在5～6GHz频段的驻波比小于2.5,轴比在±5°、±35°轴向夹角下均低于 3dB,满足圆极化条件.天线在-5°～5°和-35°～35°波束角范围内增益超过1dB,后向增益控制在 0dB以下,确保了良好的幅度一致性和抗干扰能力,适合弹载应用.
Abstract
This paper presents the design of a miniaturized ultra-wideband conformal antenna suitable for the 5～6GHz frequency band.The antenna adopts a conical conformal layout to adapt to the irregular missile head and meet matching performance requirements.The antenna is installed inside a hollow conical structure on the top of the carrier.Its ultra-wideband characteristics are achieved through a microstrip gradient balun and a tapered transition section occupying 1/4 circle of the bottom of the spiral antenna.Test results show that the antenna has a standing wave ratio of less than2.5 in the5～6GHz frequency band,and the axial ratio is below3dB at±5°and±35°axi-al offsets from the maximum radiation direction,meeting the requirements for circular polarization.The antenna has a gain of more than 1dB in the beam angle range of-5° to 5° and-35° to 35°,with the rearward gain below 0dB,ensuring good amplitude consistency and anti-jamming capability.Therefore,the proposed antenna is suitable for missile-borne applications.
关键词
螺旋天线/超宽带/圆极化/小型化Key words
spiral antenna/ultra-wideband/circular polarization/miniaturization引用本文复制引用
出版年
2024
NETL
NSTL
万方数据