S波段宽带圆极化反射面天线口径合成阵列设计  

Design of an S-band wideband circular reflector aperture array used for spatial power combining

作　　者：徐刚[1] 施美友[1] 屈劲[1] 胡进光[1] 

机构地区：[1]中国工程物理研究院应用电子学研究所高功率微波技术重点实验室,四川绵阳621900

出　　处：《电波科学学报》2015年第4期723-728,共6页Chinese Journal of Radio Science

基　　金：高功率微波技术重点实验室基金(2013HPM07)

摘　　要：为了实现固态源的宽频带空间功率合成,提出采用背射式的S波段宽带圆极化螺旋天线作为口径合成的反射面单元的馈源,避免馈线和副反射面对口面的遮挡.在同轴末端设计了折叠式扼流槽,抑制沿馈线的表面电流对馈源方向图的扰动,通过对锥形螺旋的几何参数进行优化,获得了38%的百分比带宽.对反射面单元和7元口径阵进行了仿真设计,仿真结果表明:口径阵工作带宽为2.3~3.4GHz,带宽范围内增益大于31.5dB,轴比低于3dB.An S-band wideband circular reflector aperture array was designed used for spatial power combining based on solid state microwave source,the reflector element employed a novel back-fired helix antenna as the feeder,so that to avoid the aperture blockage by fed line or the sub-reflector.The helix feed was tapered to obtained wider bandwidth,38% percent band width was obtained after optimization of the geo-parameters,then the reflector element and the aperture array were simulated and design,the results were that frequency band is from 2.3GHz to 3.4GHz,the gain in the band is greater than 31.5dB,and the axial ratio is lower then 3dB.

关 键 词：口径阵 圆极化 背射螺旋天线 空间功率合成 

分 类 号：TN823.27[电子电信—信息与通信工程]