Ka波段波导-带状线转换结构

Waveguide to stripline transition structure for Ka-band

提出了一种Ka波段波导-带状线转换结构,通过在多层介质板上地层的椭圆形开孔与两个椭圆形金属贴片结构完成带状线与波导之间的电磁耦合与匹配设计,实现了Ka波段信号在波导与带状线之间的相互转换。同时将背靠背波导-带状线转换结构在三维电磁场仿真软件中进行了建模和优化仿真。经过加工与测试,结果表明,在32.3~38.3GHz的频带内输入与输出回波损耗小于-10dB,插入损耗小于1.2dB。该Ka波段波导-带状线转换结构具备良好的性能,且具有结构简单、加工方便等优点,在毫米波电路设计方面具有较高的应用价值。

In this paper a waveguide to stripline transition structure for Ka-band is proposed.In this designs,waveguide to stripline transition are realized in multilayer circuit board,which are coupled and matched through elliptical slots and two elliptical metal patches.The proposed structure is designed by software and the back-to-back transition is simulated,fabricated and tested.The measurements of the designs exhibit that the input and output return loss less than-10 dB and the insert loss less than 1.2 dB between 32.3 and 38.3 GHz.The results show that this proposed structure has a good performance,the structure is simple and the processing is convenient and so on.All this indicates the structure has a good applicable worthiness in microwave circuit designs.