一种更低剖面的平面超宽带模块化天线阵列设计

New design of planar ultrawideband modular antenna array with lower profile

针对现代社会多功能一体化、小型化、轻量化的趋势,并基于前人的研究,提出了一种更低剖面的平面超宽带模块化天线阵列。该阵列通过更换介质基板材料,并在天线末端添加金属片的方式,降低天线剖面的同时,保证天线在5.5~21.35 GHz频带内具备较好的性能。仿真结果表明,在边射、45°和55°三种扫描状态下,有源驻波比分别低于2.0、3.0和3.5;端口隔离度大部分低于-15 dB;交叉极化亦能低于-15 dB。在具备较好的天线性能同时,更低的剖面,有利于降低实际工程应用中的成本。

With the trend of multifunctionality, miniaturization and light weight, this paper, based on former researches, presents a new design of planar ultrawideband modular antenna(PUMA) array with lower profile. By replacing the substrate materials and adding metal plate at edges of antenna, the antenna can achieve lower profile and good performance within operating band of 5.5~21.35 GHz. The simulation results show that the Active VSWR<2.0, 3.0, 3.5 while scanning to broadside, 45°, 55°, respectively, and both port isolation and cross polarization can be lower than-15 dB. With good performance, lower profile leads to much less cost on engineering application.