一种低剖面阵列天线散射特性研究

宽频带宽角域隐身是下一代隐身飞行器平台的关键特征之一，发展超宽带低剖面高隐身传感器已成为下一代隐身飞行器平台的必然趋势。文章瞄准天线阵列超宽带、轻薄化、高隐身的需求特点，设计了一款低剖面的宽带宽角相控阵隐身阵列天线。采用强互耦超宽带相控阵列技术，使阵列天线具备超宽带轻薄化低剖面特征，并通过宽带宽角阻抗匹配、阵列误差控制等手段缩减阵列天线雷达散射截面。仿真及测试结果表明，该低剖面天线阵列具有优良的宽带宽角辐射特性和低散射特性，基本满足下一代隐身飞行器平台对轻薄化低RCS阵列天线的需求，具有一定的工程应用价值。

Scattering Characteristics Study on Low-Profile Array Antenna

Wideband wide-angle domain stealth is one of the key features of the next generation stealth aircraft platform.The development of ultra wideband low-profile and high stealth sensors has become the inevitable trend for such aircraft platform. In this paper, a low-profile wideband wide-angle phased array is designed to meet the requirements of ultra wideband, extreme thinness and high stealth. Based on the tightly coupling mechanism, the working frequency band of antenna array is designed to cover the whole X band, and the thickness of the antenna array is dramatically decreased. Furthermore, wide angle scanning is realized by adding an impedance matching layer. The mode scattering and structural scattering is reduced by wideband impedance matching and array error controlling technology. The simulation and experimental results show that the antenna array also has excellent wideband wide-angle radiation characteristics and low scattering characteristics, basically meet the requirements of the next generation stealth aircraft platform for low RCS array antenna. The works in this paper provide project application values on the future stealthy aircrafts antenna design.