【作者】 尹佳宁； 张云华； 舒元亮； 邓固颖； 陈可；

【Author】 Yin Jianing;Zhang Yunhua;Shu Yuanliang;Deng Guying;Chen Ke;School of Electronics and Information,Wuhan University;

【机构】 武汉大学电子信息学院；

【摘要】 本文提出了一种基于极化转换单元的超宽带透射表面阵列天线设计方法。首先以非对称开口圆环为基础设计了一种超宽带的透射型极化转换单元,其具有超宽带(5～13GHz)透射传输能力,360°的透射相位覆盖和很好的相位线性度。基于这一极化透射单元结构设计了一个口径为250mm×250mm的超宽带线极化透射阵列天线。仿真结果表明,该透射阵列天线在12GHz实现最大增益27.33dB,其3dB增益频带范围为7.5～14.5GHz,相对带宽达63.6%。该天线的最大口径效率高达75.69%,且在6.6～12.2GHz均实现口径效率优于50%。更多还原

【Abstract】 In this paper,a design method of an ultra-wideband linearly polarization transmitarray antenna based on polarization conversion unit is proposed.Firstly,based on the asymmetric split circular ring,an ultra-wideband transmissive polarization conversion unit with ultra-wideband(5-13 GHz) transmission capability,a transmission phase coverage of 360°and good phase linearity is designed.An ultra-wideband linearly polarization transmitarray antenna with a diameter of250 mm× 250 mm is designed based on the proposed element.The simulation results show that the peak simulated gain is 27.33 dB in12 GHz and the its bandwidth of 3 dB gain drop is 63.6% from 7.5 GHz to 14.5 GHz..Moreover,the peak aperture efficiency of the antenna is 75.69% and the aperture efficiency is greater than 50% from 6.6 GHz to 12.2 GHz.更多还原