一种P波段宽带端射天线设计

Design of a Broadband End-fire Antenna at P Band

设计了一种P波段的宽带端射天线。该天线以传统八木天线为基础,将振子尺寸缩小为原来的一半,并将振子放置在金属平板上,进而对天线的反射器和引向器进行改进,并通过对天线参数的仿真优化,最终将天线的带宽扩展到了38.4%,并保证了频带内相对较高的增益。仿真结果表明,天线能够在0.5~0.8 GHz的频带之内实现良好端射,并保证带内回波损耗均在-10 d B以下,整个频段内天线的方向性系数均在8.6 d Bi以上。

In his paper,a broadband beam end-fire antenna at P-band is designed. On the basis of traditional yagi antenna,this antenna can minimize the original dipole to half of its former size.It also places the monopoles on the metal plate to improve the reflector and directors of this antenna moreover. This antenna successfully expands the bandwidth to 38. 4% at the sacrifice of deterioration of pattern through the simulation optimization of antenna parameters,which at the same time ensure the high gain in the relatively frequency band.Simulation results indicate that the antenna can implement good radiation between the frequency band of 0.5 GHz and 0.8GHz,ensure the return loss to be under- 10 d B,and the direction coefficient of the plate end-fire antenna in the whole band are above8.6 d Bi.