无线电工程

随着天线技术的发展,对信道带宽提出了更高的要求。为了扩大网络带宽,论述了一种C波段宽频带正交模转换器(OMT),介绍并分析其工作原理。与普通正交模变换器相比,这种宽OMT采用了新型的连接结构,不仅展宽了频带,同时能得到优良的隔离特性与驻波特性。应用HFSS对这种新结构OMT进行仿真计算,能得到理想的结果,在43%的工作带宽内表现出良好的特性。以此为参考制造了实物,对其进行实际测试,符合仿真的结果。

As the development of antenna,the requirement of channel has been advanced.In order to extend the band,this paper provides an overview about wideband OMT.The theory of the OMT is introduced.Compared with generic one,the design based on a new junction does not only broaden bandwidth,also receives a perfect characteristic of isolation and VSWR.An OMT is designed and optimized using the HFSS software,and the result is good.It can have a perfect characteristic in 43% of operating bandwidth.Based on this,we manufacture one material model and perform a practical test,the test result accords with that of simulation.