不同馈点的细线偶极子天线的分析与比较

Analysis and Comparison of the Different Source Location Point's Thin-wire Dipole Antenna

将细线偶极子的无限小缝隙模型运用于时域有限差分法计算中 ,采用已经进行频谱预估计的高斯脉冲源 ,用时域有限差分法给出了源点在不同位置时 ,细线偶极子天线输入阻抗的计算结果 .并将中心激励的细线偶极子的输入阻抗的计算结果与矩量法 (Mo M)法计算结果进行了比较 .

The infinitesimal gap mode of a thin-wire dipole antenna is used in FDTD Calculations. The antenna input impedance of thin-wire dipole antenna is calculated using performing deconvolution Gaussian type pulse source. The antenna input impedance's FDTD calculation result of the different excitation source location point's thin-wire dipole antenna (center-fed dipole, 1/8-fed dipole, 1/4-fed dipole, and 31/8-fed dipole) are given and discussed. Furthermore, the antenna input impedance's FDTD calculation result of center-fed thin-wire dipole antenna agrees well with the MoM's calculation result.