一种新型宽频带低剖面高效率平板缝隙天线

摘要

提出一种新型平板缝隙天线.与传统波导缝隙天线相比,天线具有更宽的频带、更高的效率、更低的剖面,且设计更容易、加工更简单.仿真设计一个Ku频段16×16单元阵列,阵列在15%的频带范围内,驻波比VSWR<2,副瓣电平SLL<-20.5dB,效率>80%.仿真结果表明,天线各方面性能优异,能够很大程度上取代目前广泛采用的传统波导缝隙阵天线.另外,天线形式还可扩展为圆极化或单脉冲天线.%A novel flat slot antenna is proposed. Compared with the conventional slotted-waveguide antenna, the antenna presented here has wider bandwidth, higher efficiency, lower profile, and its design process is easier. A 16×16 array operating at Ku band is designed. The simulation results indicate a high efficiency of 80% with the bandwidth of 15%. The antenna structure proposed in this paper has so many attractive features that it can replace the conventional slotted waveguide antenna in many situations.