摘要
基于学科交叉,文中研究了热加工对平板裂缝天线电性能的影响问题。首先,应用热弹塑性理论和生死单元技术,模拟了降温曲线、焊料及工装方式3种不同因素对天线残余应力、变形的影响。然后,文中提出了结构位移场与电磁场的场耦合理论模型,研究了热加工误差对天线电性能(增益、副瓣电平等)的影响。最后,将理论与方法应用于某机载平板裂缝天线的实际工程中,取得了较为满意的结果。
The effect of braze welding on the electromagnetic performance of planar slotted waveguide antennas is studied based on inter-disciplinarity. Firstly, according to thermal elastic-plastic theory and birth-death tech- nique, the impact of three factors including cooling curve, solder and clamping method on the antenna＇s residual stress and deformation is simulated. Secondly, on the basis of fields coupled mathematical model between structural displacement field and electromagnetic field, the influence of manufacturing errors from braze welding on the antenna＇s electromagnetic performance （gain, side lobes, etc. ） is explored. Finally, the theory and method are applied to an airborne planar slotted waveguide antenna, some satisfactory results are obtained.
出处
《电子机械工程》
2014年第5期41-47,64,共8页
Electro-Mechanical Engineering
基金
国家自然科学基金资助项目(51365003
51405364)
中央高校基本科研业务费项目
关键词
平板裂缝天线
焊接变形
降温曲线
焊料
工装方式
电性能
planar slotted waveguide antenna
soldering distortion
cooling curve
solder
clamping method
electromagnetic performance
