| 摘要: |
| 通过使用容性馈电贴片、短路面和短路探针，设计并分析了一种宽带微带天线。该天
线的相对带宽达到47.3% (S11＜-10 dB)，频段覆盖16～2.59 GHz。
工作频段内的3个谐振频率形成了足够大的带宽。仿真结果表明，容性馈电贴片对辐射贴片
表面电流的耦合效应会影响天线的性能，通过调节短路探针的位置可以获得稳定的辐射方向
图。该天线的工作频段和特性符合无线通信系统应用的要求。 |
| 关键词: 宽带微带天线 容性馈电贴片 辐射方向图 短路探针 短路面 |
| DOI： |
|
| 基金项目:重庆市自然科学基金资助项目（CSTS2007BB2446） |
|
| Design and Analysis of a Wideband Capacitively fed Microstrip Antenna |
| GUO Ge,SHAO Jian-xing |
| (College of Optoelectronic Engineering, Chongqing University of Posts and Teleco
mmunications, Chongqing 400065, China) |
| Abstract: |
| By using a capacitive feed, shorting wall and shorting post, a wideban
d microstrip antenna is designed and analyzed. The impedance bandwidth of the pr
oposed antenna reaches 47.3%(S11＜-10 dB) and the operation band i
s 1.6～2.59 GHz. Such a wide bandwidth is attributed to three resonances
introduced by
the antenna. As shown in simulation results, antenna performance is affected by
the distribution of coupled surface current on the patch,and stable radiation p
att
erns can be obtained by adjusting position of the shorting post. Operation ban
d of the proposed antenna can meet the requirements of wireless communication sy
stem applications. |
| Key words: wideband microstrip antenna capacitive feed radiation pattern shorting post shorting wall |
