一种新型双频带帽型馈源反射面天线设计方法  

A Novel Design for Dual-band Hat-Fed Reflector Antenna

作　　者：伊向杰 陈金龙 石俊峰[1] 余铁军[1] 马汉清[1] YI Xiangjie;CHEN Jinlong;SHI Junfeng;YU Tiejun;MA Hanqing(Xi'an Electronic Engineering Research Institute, Xi'an 710100)

机构地区：[1]西安电子工程研究所,西安710100

出　　处：《火控雷达技术》2020年第4期69-73,共5页Fire Control Radar Technology

摘　　要：本文介绍了一种新的帽型馈源反射面天线设计方法。首先,提出了一种新的相位中心计算方法,该方法基于新的相位参考点,没有引入不必要的误差,可以精确计算任意半径环形相位中心的帽形馈源的相位效率。在此基础上,利用Hfss-Matlab联合仿真方法,建立了帽型馈源反射面天线模型。最后,设计、加工并测试了一种双频带帽型馈源反射面天线。设计的帽型馈源反射面天线在12.25GHz^12.75GHz频段内电压驻波比小于1.18,且口径效率高于70%,在14GHz^14.5GHz频段内电压驻波比小于1.15,口径效率高于67.4%。测量结果与仿真结果吻合较好,这也验证了文中提出设计方法的有效性。A dual-band hat-fed reflector antenna was presented in this paper.Firstly,a new phase center calculation method(PECM),based on new phase reference point and without unnecessary error,can accurately calculate phase efficiency of hat-fed with arbitrary radius of ring-shaped phase center(RSPC).Then,by using the proposed PECM,the hat-fed with LRRSPC was established by joint simulation method of HFSS-MATLAB-API.Finally,a dual-band hat-fed reflector antenna with LRRSPC was designed,manufactured and measured.The measurement results showed that the proposed hat fed reflector antenna had a VSWR less than 1.18 and an aperture efficiency of higher than 70%in the lower band(12.25-12.75GHz)and a VSWR less than 1.15 and an aperture efficiency of higher than 67.4%in the higher band(14-14.5GHz).The measurement results roundly matched with the simulation results,which testified the validity of the proposed design.

关 键 词：相位中心 帽型馈源 反射面天线 

分 类 号：TN95[电子电信—信号与信息处理]