摘要
针对目前基于气球等平台的悬挂式长波发信天线带宽窄,阻抗特性变化剧烈的缺点,设计了一种通过添加套筒来增加天线带宽的长波天线,有效提高天线带宽和辐射效率,降低阻抗变化剧烈程度。建立了两种悬挂式长波天线模型并进行仿真,研究天线的反射系数和阻抗特性变化,对比分析两种模型底部是否接地对天线电气性能的影响,并将仿真值与实测数据进行对比,证明通过添加套筒可以增加天线带宽,最终可以为基于气球等平台的长波发信天线系统提供便于调谐的宽带天线设计方案。
Aiming at the disadvantages of narrow bandwidth and dramatic changes in impedance characteristics of suspended long-wave transmitting antennas based on balloons and other platforms,a long-wave antenna was designed to increase the bandwidth of the antenna by adding a sleeve,thereby increasing the radiation distance and radiation efficiency of the antenna,and also reduce the severity of impedance changes.Two suspended long-wave antenna models were established and simulated.Changes in the reflection coefficient and impedance characteristics of the antenna were studied.The effects of grounding the bottom of the two models on the electrical performance of the antenna were compared,and the simulation values were compared with the measured data.It is proved that the antenna bandwidth can be increased by adding a sleeve,and finally,a long-wave transmitting antenna system based on a balloon and the like can be provided with a broadband antenna design scheme that can be easily tuned.
作者
王孝华
翟琦
李丽华
王永斌
WANG Xiao-hua;ZHAI Qi;LI Li-hua;WANG Yong-bin(College of Electronic Engineering,Naval University of Engineering,Wuhan Hubei 430033,China)
出处
《计算机仿真》
北大核心
2019年第9期210-214,281,共6页
Computer Simulation
关键词
长波天线
套筒
阻抗特性
仿真
Long-wave antennas
Sleeve
Impedance characteristic
Simulation