周期地结构宽带单极天线的设计

Design of Substrate Monopole Antenna with Periodic Structure of Ground

本文提出了基于周期结构地的介质基片单极天线。由于周期结构地的高介电常数,可以在获得足够带宽情况下进一步降低天线的剖面,同时周期结构地面减小了地上的表面电流,从而使天线损耗降低,天线阻抗带宽内增益更平稳。天线测试相对带宽达到19.6%,实验结果与仿真结果、基本一致。

In this paper, a substrate monopole antenna based on periodic structure ground is presented. Due to the high dielectric constant of the periodic structure, the antenna profile is to further reduced whereas keeping the enough bandwidth. Also the periodic structure ground reduces the surface currents on the ground, thereby the antenna loss reduces. The antenna gain is more smooth in the impedance bandwidth. The relative bandwidth of the antenna is 19.6%, and the experimental results are in agreement with the simulation results.