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采用FDTD全波分析方法对Hilbert和H分形天线进行分析 .输入阻抗和方向图的计算结果验证了分形天线结构自相似性导致电特性的频率周期性变化这一规律 .所得Hilbert输入阻抗结果同有关实验数据吻合较好 .研究表明Hilbert和H分形天线具有降低天线结构尺寸的优点 ,相对于一般阵子天线 ,结构尺寸大为降低 .分形天线阶数越高 ,天线结构降低越大 .同时对分形天线方向图的全波分析证明分形天线同阵子天线的方向图基本相似 .
Hilbert and H fractal antennas are analyzed by FDTD full-wave analysis method.The results of input impedance and directional pattern verify the regularity that the self-similarity of fractal antenna structure causes the frequency of electrical characteristics to change cyclically.The obtained Hilbert input impedance results are related to The experimental data agree well.The research shows that the Hilbert and H fractal antenna have the advantages of reducing the size of the antenna structure, the structure size is greatly reduced compared with the conventional antenna array, the higher the order of the fractal antenna, the greater the antenna structure decrease, The full-wave analysis of the directional pattern proves that the fractal antenna is basically similar to the directional antenna pattern.