一种向外延伸矩形的Minkowski分形超宽带天线

摘要

A Minkowski fractal UWB antenna with outwardly extending rectangular structure was proposed. This antenna achieved a good impedance matching and got a ultra wide band by adopting a two-order outwardly extending rectangular Minkowski fractal whose limited ground was also rectangular structure. The simulation result shows that the bandwidth of the antenna ranges from 3.1 GHZ to 11.2 GHZ, the relative bandwidth is 113.3%, the size of antenna is 38 mm×32 mm×1 mm.The proposed antenna meets the requirement of ultra wideband communication antennas, it is easily integrated because of the simple structure and small size.%设计了一种向外延伸的闵科夫斯基（Minkowski）分形超宽带天线。该天线采用二阶向外延伸矩形的Minkowski分形，矩形结构的有限接地面使天线获得良好的阻抗匹配，进而实现天线的超宽带性能。经过优化，天线的工作频带可达到3.1~11.2 GHz，相对带宽为113.3%，天线的尺寸为38 mm×32 mm×1 mm。满足了超宽带通信对天线的要求，而且结构简单，尺寸小，易于集成。