摘要
根据紧耦合能够有效拓展天线工作带宽的原理,结合天线在强耦合安装环境下阻抗的变化规律,研究贴片与金属地对天线阻抗的影响,提出了一种能够嵌入金属机箱的超宽带共形天线。通过仿真技术表明:该天线在0.8~3.2 GHz频段范围内的S_(11)均小于-10 dB,且天线增益大于3 dBi。可见,设计的天线能够满足列车无线通信系统对宽频带和共形的性能需求。
Base on the theory that tightly coupling can extend the bandwidth of the antenna, the rule in variations of antenna impedance in the strong coupled environment was used to study the influence of patch and metal ground on the impedance of the designed antenna. A new tightly coupled ultra-wideband internal conformal shape antenna which could be embedded in the metal box was introduced. The simulation results showed that the S11 of the designed antenna was less than -10 dB in the broad band from 0.8 GHz to 3.2 GHz, while the gain was greater than 3 dBi. Obviously, the designed antenna could meet the performance requirements of the train radio communication system for the wideband and conformal shape performance.
作者
唐军
潘文波
TANG Jun;PAN Wenbo(CRRC ZIC Research Institute of Electrical Technology ＆ Material Engineering,Zhuzhou,Hunan 412001,China)
出处
《机车电传动》
北大核心
2018年第4期59-61,66,共4页
Electric Drive for Locomotives
基金
国家科技支撑计划项目(2015BAG14B00)
关键词
车载设备
紧耦合
超宽带
内置天线
列车无线通信
on-board equipment
tightly coupling
ultra-wideband
internal antenna
train wireless communication
