【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。更多还原

【Abstract】 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.更多还原