【作者】 秦涛； 林先其； 刘昊； 於阳；

【Author】 Tao Qin;Xian Qi Lin;Hao Liu;Yang Yu;University of Electronic Science and Technology of China,Yangtze Delta Region Institute (Huzhou);

【机构】 电子科技大学长三角研究院(湖州)；

【摘要】 本文提出了一种具有大扫描角度、高增益、低损耗的相控馈源天线设计方法。基于传统平面双焦反射面天线的迭代程序,通过优化各馈电天线口径场的幅度分布,提升阵列有效利用率和波束扫描增益平坦度。基于此方法,本文给出的相控馈源天线案例共由64路馈源单元与主/副两套赋形金属反射面组成。工作频率为2.2 GHz时系统最大增益为41.6 dBi,口径效率约为64.45%,1-dB相对增益带宽约为9%,且正负4.5度波束扫描范围内增益损失小于0.6 dB。更多还原

【Abstract】 An efficient design method for the phased array feed(PAF) antenna with a wide scanning angle and low gain loss is proposed in this paper.Based on the iterative program of the traditional planar bifocal reflector antenna,by optimizing the amplitude distribution of the aperture field of the feed antenna elements,the effective utilization rate of the feeding array is improved while the beam scanning gain flatness still shows good performance.One PAF consisting of 64 feeding units and two contour-shaped metallic reflectors is presented as the design example.With a maximum gain of 41.6 dBi at the operating frequency of 2.2 GHz and a 1 dB relative bandwidth of about 9 %,this PAF shows the 0.6 dB scanning gain loss for the 0 to 9 degrees field-of-view range.更多还原