一种阶梯型双层微带贴片天线的优化设计

摘要

文章提出一种阶梯型双层微带贴片天线,该天线有2层贴片,第1层贴片类似阶梯状,第2层贴片呈T型;采用时域有限差分法(FDTD)工具建模仿真,优化后的天线在-12 dB的相对带宽达到了27％(2.26～2.96 GHz),完全覆盖2.4 GHz频段,其较宽的带宽满足高清数字电视传输和互联网应用的要求.%A novel ladder-type double-layer microstrip patch antenna is proposed. This antenna consists of two patches-one is ladder-typed and the other is T-shaped. The modeling and simulation is conducted by finite-difference time-domain(FDTD) method, and the results show that the relative bandwidth of the optimized antenna reaches 27% as the value of S11 is lower than -12 dB in 2. 26-2. 96 GHz frequency range, completely covering the 2. 4 GHz frequency range. And with the broad band, the requirements of high definition multimedia interface(HDMI) and Internet are met.