| 摘要: |
| 研制了一款超宽带印刷单极子天线，通
过在接地板上开方形槽，展宽带宽的同时也改善了带内特性。再在金属贴片顶部开扇形槽，
进一步在高频段展宽了频带。实测结果显示，改进后的天线-10 dB阻抗带宽为2.1～2
5.5 GHz，而原不加槽天线的仿真带宽为2～11.4 GHz，带宽展宽了14 GHz。仿真
和实测结果显示，天线在2.5 GHz、8 GHz、25 GHz的方向图对称性良好。 |
| 关键词: 超宽带 单极子天线 开槽 |
| DOI： |
|
| 基金项目: |
|
| Design of a Novel Ultra wideband Monopole Antenna |
| XU Hai-yang,ZHANG Hou,LIANG Jian-gang,WANG Hong-guang |
| (Missile Institute, Air Force Engineering University, Sanyuan 713800,China) |
| Abstract: |
| The UWB(Ultrawideband) printed planar antenna in t
hi
s paper is notched in the ground plane, so that the bandwidth is expanded, and t
he inner band performance is improved, too. Then through notching in the top of
the patch, the bandwidth is further expanded at the high frequency section. The
measured result shows that the -10 dB impedance bandwidth of the improved an
tenna is 2.1～25.5 GHz in contrast to 2～11.4 GHz of the simulated bandwidth of
the initial antenna, as a result,the bandwidth enhances 14 GHz. The simu
lated and measured results show that the radiation patterns are very symmetrical
at 2.5 GHz,8 GHz and 25 GHz. |
| Key words: ultra wideband (UWB) monopole antenna notch |
