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本文介绍一支新研制的X波段、降压收集极、栅控脉冲功率行波管。该管采用大电流密度钪酸盐阴极和小型化钐钴PPM聚集。利用切断慢波线缩短了管长、提高了增益。采用新型散热措施,在3％的工作比下,输出功率达到千瓦级。用单栅,栅丝直径为0.025mm,其电流截获率约为10％。采用单级降压收集极,降压度>40％。电子注动态流通率约为95％,图1为降压收集极的实验曲线。试验管用的是活动收集极,其轴向位置可
This article describes a newly developed X-band, step-down collector, gated pulsed power TWT. The tube is packed with high current density scandate cathode and miniaturized samarium cobalt PPM. The use of cutting off the slow wave line tube length, increased gain. The use of new cooling measures, at 3% of the work, the output power reached kilowatts level. With a single gate, wire diameter of 0.025mm, the current interception rate of about 10%. Using single-stage step-down collector, depressurization degree> 40%. Electronic note dynamic circulation rate of about 95%, Figure 1 is the experimental curve of the buck collector. Test tube is used to collect activities, its axial position can be