摘要
空间飞行器由于受到动力和负载的限制,需要尽可能使搭载的天线轻质小型化.文中提出了一种新型强耦合双圆极化轻质天线.天线单元采用H型缝隙耦合和增加寄生贴片方法,提高了天线带宽.同时,通过在辐射贴片、寄生贴片上开圆形槽,以及金属反射板栅格化的处理,明显地减轻了天线的质量.采用这种新型天线单元,设计了8单元的宽带双圆极化阵列天线.仿真结果表明:该阵列天线的中心频率为433MHz,左旋和右旋圆极化的相对轴比(Axial Ratio,AR)带宽(AR<3dB)分别达到了24.4%和23.2%,有效实现了小型轻质化宽频带双圆极化阵列天线.
Due to the limited power and loading for the spacecraft,it is necessary for the antenna on the spacecraft to be designed with small size and light weight.A novel broadband dual-polarized antenna is presented in this paper.The bandwidth of designed antenna is increased by using two orthogonal H-shaped slot and adding the parasitic patch.Meanwhile,circular slots are etched both in the radiation patch and the parasitic patch,and the metal reflection rasterizing are introduced to reduce the total weight of the antenna.An eight elements broadband circularly polarized antenna array based on this novel element is designed.The simulation results show that the central frequency is about 433 MHz and the relative bandwidth for the left hand circular polarization and right hand circular polarization are 24.4%and 23.2%,respectively.The designed antenna array has the characteristics of small size,light weight,wide bandwidth and dual polarization.
出处
《电波科学学报》
EI
CSCD
北大核心
2016年第3期426-431,共6页
Chinese Journal of Radio Science
基金
国家自然科学基金(61571130)
