摘要
以科研项目中的实验测量系统研制为背景,结合实际的教学目标,开展了宽带加脊喇叭天线的结构设计和实验研究。基于超宽带加脊喇叭天线的原理和系统的工作频率等技术指标要求,设计了具体的宽带喇叭天线的结构,采用全波电磁仿真软件进行参数优化；对加工的宽带喇叭天线进行了性能测试。结果表明,在2～4 GHz的阻抗带宽内驻波比小于2,增益大于8 dB,方向图具有宽波束性能,交叉极化电平低于－30 dB,满足实际科研项目的需要。通过该教学和科研相结合的教学实践,提高了教学效果,也为实际科研项目的开展发挥了重要的作用。
Taking the measurement system research background,considering the actual teaching goal,the structure design and experiment research of a wide band ridge-loaded horn antenna was carried out.According to the working principle of the ultra wide band （UWB）ridge-loaded horn antenna and technical requirements of designed system such as the working frequency,the specific structure of UWB horn antenna was designed and the parameters of the designed horn were optimized by the electromagnetic simulation. The working performances of the fabricated UWB horn antenna were measured.The measurement results show that the voltage standing wave ratio（VSWR）of the fabricated horn antenna is lower than 2 and the gains are higher than 8 dB within the impedance bandwidth from 2GHz to 4GHz.The radiation pattern has wide beam width and the cross polarization level is lower than -30 dB.The performance indexes of the designed UWB antenna can satisfy the requirements of the proj ect.The teaching effect can be improved by use of the teaching practice combined with the teaching and scientific research. At the same time,the research work also plays an important role in the practical scientific research proj ect.
出处
《实验技术与管理》
CAS
北大核心
2016年第6期31-37,共7页
Experimental Technology and Management
基金
哈尔滨工业大学(威海)校级教学研究项目(ITDA10002104)
国家科技重大专项(2014ZX03003001-004)
航空科学基金项目(20131837001)
国家自然科学基金面上项目(61271118)
关键词
超宽带天线
教学实验
电磁仿真
交叉极化
wide band antenna
teaching experiment
ultra electromagnetic simulation
cross polarization
