95GHz喇叭天线的设计

Design of the Horn Antenna at 95GHz

利用电磁波特性精确测量低损耗介质的介电常数和损耗角,需要更高频率的天线。本文利用商业电磁仿真设计软件CST STUDIO SUITE 2016,设计了一种可发射频率为95 GHz电磁波的圆锥喇叭天线,并对其性能进行了仿真分析。根据天线的仿真结果制造天线并进行测量。通过比较仿真结果和测量结果,验证得出:虽然仿真结果和测量结果在一些频率上出现明显的差异,但是它们都表明该天线能够在94~96GHz频率范围内工作,VSWR低于1.25,同时保持稳定的辐射。由于其比一般的圆锥天线具有更高的工作频率,使其在测量低损耗介质性质具有更强的优越性。

A higher frequency antenna is required to accurately measure the dielectric constant and loss angles of low-loss media using electromagnetic portability.Using the commercial electromagnetic simulation design software CST STUDIO SUITE 2016,a conical horn antenna with an emission frequency of 95 GHz is designed and its performance is analyzed in this paper.The antenna is manufactured and measured according to the simulation results of the antenna.Through comparing the simulation results and measurement results,it is verified that although the simulation results and measurement results can find obvious differences in some frequencies,they all show that the antenna can work in the frequency range 94-96 GHz,VSWR below 1.25,while maintaining stable radiation.Because it’s more than a normal circle the cone antenna has higher operating frequency,w hich makes it more superior in measuring the properties of low loss media.