π-TM_(610)模同轴双间隙腔耦合同轴线输出电路

Output Circuit of π-TM_(610) Mode Double-Gap Coaxial Cavity Coupled with Coaxial Line

该文提出一种适合于X波段多注速调管的π-TM610模双间隙同轴腔的同轴线输出电路,并详细分析了其带宽和输出功率容限等重要性能,结果表明:π-TM610模双间隙同轴腔耦合同轴线之后,输出腔中各个电子注孔的特性阻抗仍然很均匀;但由于输出腔外观品质因数太大而且无法使其降低,导致输出频带较窄;输出功率容限则为1MW左右。因此它比较适合作为高射频段的高功率窄带多注速调管的输出电路。

A π-TM610 mode double-gap coaxial cavity loaded by a coaxial line is proposed as the output circuit of X-band multi-beam klystron. Its main performances, such as bandwidth and power capacity, are studied. The results show that characteristics impedances along different beam hole are still almost equal after the output cavity coupled with a coaxial line. But the external quality factor of the output cavity is too large and difficult to diminish so that the output bandwidth is small. The output power capacity reaches about 1MW. So it is suitable as a proper output circuit of high power narrowband multi-beam klvstron of high radio-freauencv.