Minkowski分形天线分析

Analysis of the Minkowski fractal antenna

用矩量法对Minkowski分形天线进行了分析,给出了其谐振频率和方向图的计算值.用类似于单极子的馈电方式测量了Minkowski分形环的阻抗特性.实验数据和数值结果都表明,Minkowski分形环天线比同尺寸的方环天线具有更低的谐振频率.这说明分形的空间填充性已转化成天线的电磁特性,并使得这类天线具有尺寸缩减性.

The Minkowski fractal antenna is analyzed by the moment method, with their resonant frequency and pattern given. The Minkowski fractal antennas input impedance is also measured similar to a monopole feed structure. Both experimental and numerical results show that the Minkowski fractal antenna has a lower resonant frequency than the square loop antenna of the same size. That is to say, the spacefilling properties of the fractal shape are translated into its electromagnetic behavior and make this kind of antenna have a reduced size.