波纹喇叭差模耦合点的分析

通过对波纹喇叭基本理论的分析,描述了波纹喇叭具有的特殊参数点(低频截止点、快慢波分界线、平衡混合条件、高频截止条件、短路条件)的表达式及特征。以此为依据,详细讨论了在波纹喇叭中主模HE11与差模HE21共存的条件,以及在波纹喇叭内的差模临界截止点的分析。通过寻找到电流或者是电压的波腹点,由此可以更准确选定好开耦合口的位置。

Analysis of Differential Mode Coupling Point of Corrugated Horn

Some special parameter points（low frequency cut-off point,the critical condition between fast-wave and slow-wave,the balanced hybrid condition,the high frequency cut-off condition,the short circuit condition）of the corrugated horn,including their expressions and characters,are described through the analysis of basic theory of corrugated horn.Then a detailed discussion is presented about the condition under which the dominant mode and the differential mode coexist in the corrugated horn,and the differential mode critical cut-off point in the corrugated horn is analyzed.The coupling aperture position can be chosen correctly by finding the antinode of the current or the voltage.