圆形槽波导-波纹圆形槽波导模式变换器的仿真设计  

Simulation Design of Circular Groove Waveguide to Corrugated Circular Groove Waveguide Mode Converters

作　　者：王善进[1] 张莉[2] 杨鸿生[3] 

机构地区：[1]东莞理工学院电子工程学院,东莞523808 [2]惠州学院电子科学系,惠州516015 [3]东南大学电子科学与工程学院毫米波国家重点实验室,南京210096

出　　处：《微波学报》2010年第2期70-73,共4页Journal of Microwaves

基　　金：东莞市高等院校科研机构科技计划项目(2008108101009)

摘　　要：应用基于有限元方法的仿真软件HFSS,分析和设计了圆形槽波导-波纹圆形槽波导模式变换器。变换器由具有渐变波纹深度的波纹圆形槽波导构成,可实现TE11到HE11的模式转换。分析表明,变换器的长度和第一个波纹的深度是影响其性能的主要因数。在保持变换器优化长度不变的条件下,调整波纹周期、增加波纹数目和波纹宽度对改善变换器的性能效果不明显。所设计的具有5个渐变深度波纹的模式变换器,在中心频率36GHz上回损可达30dB。变换器实测的结果与仿真分析之结论吻合较好。Design of Circular Groove Waveguide to Corrugated Circular Groove Waveguide Mode Converters was given by use of HFSS.The mode converter consists of a corrugated circular groove waveguide with varying slot depth,which can achieve to mode conversion.It was shown that the total length of the converter and the depth of the first slot are critical.Provided the converter length remained unchanged from its optimum value,increasing the number of slots and having moderate variation in slot width,pitch had negligible effect on performance.A designed five-slot mode converter achieved a theoretical return loss of 30dB at center frequency 36GHz.The measurement result was consistent with the design.

关 键 词：圆形槽波导 波纹圆形槽波导 模式变换器 

分 类 号：TN631.2[电子电信—电路与系统]