闪电电磁脉冲卫星接收天线设计初步探索

Design of LEMP receiving antennas on satellite

针对卫星轨道闪电电磁脉冲 (LEMP)的信号特征以及接收环境的限制 ,提出了卫星轨道接收LEMP的天线设计参数 ,并据此设计了对称振子天线和对数周期振子阵天线。计算出了两种天线的辐射阻抗 ,输入阻抗 ,增益曲线 ,驻波比等参数 ,还给出了对数周期振子阵天线的各参数曲线。最后对两种天线进行了比较。对称振子的特点结构简单适合于当前应用。对数周期天线的接收性能优于对称振子天线 。

With the consideration of satellite-orbited lightning electromagnetic pulse(LEMP) signal characteristics and signal receiving environment limitations, the author studied the design requirement and parameters of LEMP receiving antennas.The dipole antennas and broadband log-periodic dipole array antennas were designed accordingly.Both antennas were figured out with their parameters of radiation resistance, input resistance, gain, VSWR etc. And LPA parameters plots were also presented. Finally, this paper discusses the virtue and defect of the two antennas. The dipole antennas is with a simple structure, and it fit for application in current project. LPAs have higher performance than dipole antennas in receiving signal aspects, which found its uses in special satellite in exploring LEMP.