摘要
为防止复杂系统中发射天线的大功率辐射影响附近无线电接收机的工作,需要分析接收机附近的电磁环境。在总体设计过程中,往往只具备天线的方向图信息而缺失内部结构信息,所以需要能够满足上述要求的快速分析方法。基于一致绕射理论(Uniform theory of diffraction,UTD)方法,建模近圆柱体表面的天线辐射特性,并将其结果与矩量法和实测结果进行对比,结果表明基于UTD方法的计算结果对于总体设计中天线的布局和辐射敏感度指标的制订具有较强的参考意义。
To avoid transmitter interfering nearby radio receivers, the electromagnetic environment needs analyzing. However, during system design, the antenna structure is usually unavailable and only its radiation pattern can be acquired. Therefore, fast analysis method which does not require detail structure is needed. The electromagnetic environment generated by antennas on the surface of metallic quasi-cylinder is modeled on the basis of UTD （uniform theory of diffraction） method. The simulation results are compared to the result of moment method and measurement, which shows that the UTD method is suitable to provide a reference for the antenna allocation and decision of the radiation sensitivity of radio receiver.
出处
《导弹与航天运载技术》
北大核心
2013年第1期75-77,共3页
Missiles and Space Vehicles
关键词
天线
电磁兼容
一致绕射理论
Antenna
Electromagnetic compatibility
Uniform theory of diffraction
