L波段无人机脉冲抑制导航天线  

L-band pulse suppression navigation antenna for UAV

作　　者：宋宏伟 逯暄 彭甫镕 张婷 SONG Hongwei;LU Xuan;PENG Furong;ZHANG Ting(College of Physics and Electronic Engineering,Shanxi University,Taiyuan 030006,China;Institute of Big Data Science and Industry,Shanxi University,Taiyuan 030006,China)

机构地区：[1]山西大学物理电子工程学院,山西太原030006 [2]山西大学大数据科学与产业研究院,山西太原030006

出　　处：《电子设计工程》2025年第8期1-5,共5页Electronic Design Engineering

基　　金：国家自然科学基金面上项目(62276162);山西省基础研究计划项目(202203021222016)。

摘　　要：为确保无人机导航天线在复杂电磁环境下的正常使用,设计了一种L波段的脉冲抑制导航天线。天线以直径为90 mm的圆形Rogers RO4350为介质基板,采用偏心同轴馈电,并在辐射面上添加正方形贴片与切角,实现圆极化的基本导航天线。在辐射面添加PIN二极管与条状贴片,使天线在正常导航的同时具备脉冲抑制功能。正常导航时,PIN二极管截止,天线工作于1.575GHz的导航频率;强电磁脉冲入射时,PIN二极管被可逆击穿,天线的谐振频率降低到1.343GHz,干扰信号将处于当前天线的阻带,达到脉冲抑制的效果。实测性能与仿真结果相吻合,表明所设计的L波段脉冲抑制天线既能满足无人机的导航功能,又能有效抑制脉冲干扰,保护无人机的后端电路不受损坏。To ensure the use of the UAV navigation antennas in complex electromagnetic environments,an L-band pulse suppression navigation antenna was designed.The antenna uses a circular Rogers RO4350 with a diameter of 90 mm as the dielectric substrate,adopts eccentric coaxial feeding,and adds square patches and chamfers on the radiation surface to achieve a basic navigation antenna with circular polarization.Two PIN diodes and strip patches are added to the radiation surface to enable the pulse suppression function during navigation.During navigation,the PIN diode is cut off and the antenna operates at the navigation frequency of 1.575 GHz;when a strong electromagnetic pulse is incident,the PIN diode is reversibly broken down,and the resonant frequency of the antenna decreases to 1.343 GHz.The interference signal will be located in the stopband of the antenna,achieving the effect of pulse suppression.The measured performance is consistent with the simulation results,indicating that the designed L-band pulse suppression antenna can not only meet the navigation function of the UAV,but also effectively suppress pulse interference and protect the backend circuit of the UAV from damage.

关 键 词：无人机 导航天线 L波段 脉冲抑制 PIN二极管 

分 类 号：TN967.1[电子电信—信号与信息处理]