一种新颖的微带馈电椭圆缝隙超宽带天线研究

Study on a novel microstrip-fed ultra-wideband elliptical slot antenna

研制了一种具有扇形终端的微带线馈电椭圆缝隙超宽带天线，利用仿真软件分析了椭圆结构和扇形结构尺寸对天线性能的影响，对天线的结构参数进行了优化。实测天线的阻抗带宽为3．8～9．2GHz，在整个带宽上基本呈现全向性，并且具有较稳定的增益，约为5dBi。该天线可广泛用于通信、军事等领域。

An ultra wideband （UWB） elliptical slot antenna fed by microstrip line with a very particular fan-shaped terminal was developed. Simulation software was used to analyze the structure parameters of ellipse and sector to achieve better bandwidth characteristics, and the proposed antenna was fabricated and measured. Finally, the impedance bandwidth of the antenna is 3.8--9.2 GHz, results demonstrate that the proposed antenna is nearly omni-direction over the entire operating bandwidth, and also has stable gain almost 5 dBi. In consideration of the merits, the proposed antenna can be used in communication and military or tumor detection.