【作者】 李磊； 王瑞； 杨峰；

【Author】 LI Lei;WANG Rui;YANG Feng;School of Electronic Science and Engineering,University of Electronic Science and Technology of China;

【机构】 电子科技大学电子科学与工程学院；

【摘要】 本文提出了一种低交叉极化的小型化双极化天线,天线工作在X频段。天线采用双层介质微带结构,选择正八边形贴片作为辐射结构和枝节耦合馈电方式实现双线极化;通过在正八边形的辐射贴片开出同为八边形的细缝,将天线整体尺寸减小至0.4λ₀×0.4λ₀×0.0787λ₀,面积缩小了43.75%,同时波束偏移得到了矫正;在开缝产生的中间贴片上挖去三个小正方形,极大地改善了天线的交叉极化。该天线在HFSS仿真模拟环境下,交叉极化达到了-37.5 dB,波瓣宽度为±50°,增益为6.4 dBi,具有低交叉极化和小型化等特点。更多还原

【Abstract】 In this paper,a miniaturized dual-polarized antenna with low cross polarization is proposed,which works in the X—band.The antenna adopts the double-layer dielectric microstrip structure,and adopts the regular octagon patch as the radiation structure and the coupling feeder mode to realize the dual-wire polarization.By opening the same octagonal slit in the radiation patch of the regular octagon,the overall size of the antenna is reduced to 0.4λ₀×0.4λ₀ ×0.078λ₀,the area is reduced by 43.75 %,and the beam deviation is corrected.The cross-polarization of the antenna is greatly improved by cutting out three small squares in the middle patch produced by the slit.In the simulation environment of HFSS,the cross polarization of the antenna reaches-37.5 dB,the width of the beam is±50°,and the gain is 6.4 dBi.The antenna has the characteristics of low cross-polarization and miniaturization.更多还原