设计了一种全金属的Vivaldi 天线,当频率为3 ~17 GHz 时,其VSWR<2,在宽边扫描情况下,VSWR 小于2. 0 的带宽能达到11 GHz。它不仅具有频带宽、方向性好等特点;同时,它还能解决传统Vivaldi 天线制作工艺复杂、制作成本高、物理强度低等问题,能更好地应用于高功率雷达等领域。文中利用高频结构仿真软件HFSS 对设计天线的几何尺寸进行了优化,并进行了仿真与分析,通过计算天线的驻波比、方向图、增益等性能验证了天线的超宽带、宽边扫描的特性。

An all-metal Vivalidi antenna operating at the bandwidth of 3 ~17 GHz is proposed and its VSWR is less than 2 over the UWR band. The bandwidth can be up to 11 GHz in the case of broadside scan. The traditional Vivaldi antenna has the problems of high cost、low physical strength and complex structure, this all-metal Vivaldi antenna can solve those problems and this design is ideal for high-power applications. By using high frequency structure simulation software HFSS, the structure is optimized, simulations and analysis are presented for the all-metal Vivaldi array element in single polarization configuration, by computing the VSWR, radiation pattern and the gain, we can see its characteristics of ultra-wideband and broadside scan.

TN957.7