UHF波段开槽天线宽带阻抗特性分析
Analysis of wide-based impedance characteristics of tapered slot antenna in UHF band
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摘要: 该文采用时域有限差分法 (FDTD)对开槽天线在 UHF频段的宽带阻抗特性进行了分析计算。文中给出了计算所得到的一个Vivaldi天线的宽带驻波参数。通过与实验结果相比较可以看出,两者比较吻合,从而证明该文采用的分析模型和处理方法是可行有效的。根据得到的结果,开槽天线的驻波比至少在2个倍频程范围内变化不大,符合宽带工作的要求。Abstract: The finite difference time-domain method is used to analyse the wide-hand impedance characteristics in UHF band of the tapered slot antenna in this paper. And the SWR of a, Vivaldi antenna is calculated, is in good agreement with the experimental results. The results show that the methods of modeling in this paper are correct and valid. The antenna SWR, changes a little within two octaves, so this antenna can work in wide-baud held.
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