摘要
设计了一种小型化超宽带Vivaldi天线。该Vivaldi天线采用共面结构,以降低交叉极化电平。为了向低频拓展天线的工作带宽,实现小型化设计,首先在传统的微带线转槽线的巴伦基础上加载电阻;其次,在辐射臂上加载7对不同长度的槽。整个天线的尺寸为0.32λ_L×0.24λ_L(高×宽,λ_L为最低工作频率波长)。仿真和测试结果都说明该天线的工作带宽为f_L^12f_L,增益在0dBi^10dBi。该天线可以应用于对尺寸和带宽有严格要求的电子对抗领域。
A miniaturized ultra-wide band（ UWB） Vivaldi antenna is presented. The coplanar Vivaldi structure is adopted to depress the cross-polarization level. In order to lower the cut-off frequency to miniaturize the antenna,a high chip resistor is loaded in the balun,and 7 pairs of slots are loaded in the radiation arms. The height and width of the antenna is 0. 32λ_L× 0.24λ_L（λ_Lis the wavelength in the lower frequency）. Both simulated and measured results show that the antenna can work from f_Lto 12 f_L,while the gain varies between 0dBi and 10 dBi. The antenna can be applied for electronic warfare in which small size and UWB performance are demanded.
出处
《电子信息对抗技术》
2017年第2期70-74,84,共6页
Electronic Information Warfare Technology
