Finally , the scheme of equivalent conversion is presented about the rectangular slot and circular slot in the project and the analysis of conversion error is given 最后給出了工程上圓頭縫隙與方頭縫隙換算的等效方案,且對圓、方頭縫隙的轉換誤差進行了分析。
First , a new locally conformal fdtd scheme suitable for analyzing bulletheaded slot is presented , with which the errors of two schemes transforming from bulletheaded slot into rectangular slot are compared . this new algorithm is also employed in analyzing an oblique bulletheaded slot in the broad wall of a rectangular waveguide 本文首次構造了一種適合于波導圓頭縫隙的共形fdtd方案,應用該方案對工程上方頭和圓頭縫隙的轉換誤差做了研究,并分析了傾斜組合裂縫的特性。
It is found that there is a competition among the modes such as tm _ ( 01 ) , tm _ ( 11 ) and tm _ ( 21 ) because of their similar work frequency in the experiment of rbwo with a coaxial structure , then tm _ ( 01 ) mode couldn ’ t work steadily . after shaping rectangular slot in the inner - conductor , the space between modes is enlarged , tm _ ( 01 ) mode would work steadily 在同軸返波管的實驗中發現:模式tm _ ( 01 ) , tm _ ( 11 )以及tm _ ( 21 )的工作頻率十分接近,存在模式競爭問題,使得tm _ ( 01 )不能成為穩定的工作模式,但在同軸返波管內導體加矩形開槽后,發現模式之間的間隔增大,從而使tm _ ( 01 )成為穩定的工作模式。