Design of broad-band and low-profile multi-polarized transmitting array antenna
梁洪灿 1水孝忠 1赵呈昊 1李一诺 1蒋凡杰1
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作者信息
1. 中国电子科技集团公司第五十一研究所,上海 201802
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摘要
设计了一个宽带二维扫描三角栅格多极化发射阵列,阵列天线采用双极化全金属Vivaldi结构.金属Vivaldi天线小型化可满足三角栅格的布阵条件,依据极化形成理论,研究其多极化形成特性以适应更多元化的应用.通过样机实测结果表明,该天线阵在X、Ku频段内(工作带宽3∶1)可实现大功率多极化形成;在有源驻波比(VSWR)小于3时,方位面和俯仰面扫描角可达到±30°;等效辐射功率(扫描角±30°内)可达到110 kW;阵列剖面为17 mm.
Abstract
A broadband two-dimensional scanning triangular grid multi-polarization transmission array has been designed,with the array antenna adopting a dual-polarized all-metal Vivaldi structure.The miniaturization of the metal Vivaldi antenna can meet the array conditions of the triangular grid.Based on the theory of polarization formation,the characteristics of its multi-polarization formation are studied to adapt to more diversified applications.The prototype measurement results indicate that the antenna array can achieve high-power multi-polarization formation within the X and Ku frequency bands(operating bandwidth ratio of 3∶1);with an active Voltage Standing Wave Ratio(VSWR)less than 3,the azimuth and elevation scanning angles can reach±30°;the equivalent radiated power(within±30° scanning angle)can reach 110 kW;the array profile is 17 mm.
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