加载介质透镜的高增益双脊喇叭天线设计

Design of High Gain Double Ridged Horn Antenna Loaded with Dielectric Lens

针对超宽带天线的应用,设计了一种工作在1~18 GHz的双脊喇叭天线(DRHA),其方向图在全频带内不分裂,可以满足超宽带的工程要求。同时,为了提高DRHA的辐射特性,设计了一种3D打印的锥形全介质透镜。加载介质透镜后,天线在1~18 GHz频段的实测增益增加1~7 dBi,3 dB的波束宽度减小,4~18 GHz频段的增益稳定增加。设计、加工并实测了带有介质透镜的DRHA,测量结果与仿真结果吻合较好。

For the application of UWB antenna,a dual ridged horn antenna(DRHA)operating in 1~18 GHz is designed.The pattern of DRHA is not split in the full frequency band,which can meet higher engineering requirements.At the same time,in order to improve the radiation characteristics of DRHA,a 3 D printed tapered all-dielectric lens was designed.After loading a dielectric lens,the measured gain of the antenna in the frequency band from 1 to 18 GHz increases by 1 to 7 dBi,and the beam width of 3 dB decreases.In addition,the gain in the 4~18 GHz band increased steadily.The DRHA with dielectric lens is designed and measured,and the measured results are in good agreement with the simulation results.