波纹圆形槽波导的导体损耗特性  

Metallic Loss Behavior of a Corrugated Circular Groove Waveguide

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523106 [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,南京210008

出　　处：《微波学报》2008年第6期27-31,46,共6页Journal of Microwaves

基　　金：东莞市高等院校科研机构科研项目(2007108101011)

摘　　要：计及了空间谐波和槽内高阶模的影响,文中推导了波纹圆形槽波导传输主模HE1(11)的导体损耗计算公式。在一阶近似的条件下,给出了衰减常数随工作频率、波导内径和波纹凹槽内外径之比的变化曲线。结果表明,波导的纵向开槽可有效地降低波导的导体损耗。此外,随着内壁上波纹凹槽的内外径之比由大而小,衰减常数将在更大的波导内径下取得极小值,这提示器件的传输功率容量将可得到提高。Including the effect of space harmonics in the interior region of the waveguide, while a Z independent TM and TE modes are assumed present in the groove, attenuation coefficient has been derived for the metallic loss of the dominant mode in a corrugated circular groove waveguide. Under the condition of first-order approximation, the variation of attenuation coefficient with working frequency and other numerical results are given. The results show that the attenuation can be reduced effectively by an increase of the groove width, and moreover, attenuation coefficient may become very low with a new larger interior radius when the ratio of exterior radius to interior radius becomes less, which is helpful in high power handling.

关 键 词：波纹圆形槽波导 波纹圆波导 圆槽波导 导体损耗 衰减常数 

分 类 号：TN814[电子电信—信息与通信工程] TN814.5