论文部分内容阅读
本文提供了双级、高频率、高功率、8.76GHz行波管放大器的研制结果。本工作扩大了以前对单级放大器所报导的数据资料,并对两个同样的放大器彼此隔断串联工作特性提供了新的数据。在该器件整个脉冲持续时间内,获得410MW的峰值功率,电子束微波能的转换效率为45％。在所有的工作条件下,隔离放大器显示了微波辐射频谱边带现象结构。在单级器件中也出现类似现象,输出功率超过70MW。边带频率对中心频率不对称。最大的单频平均输出功率是210MW,相应效率为24％。本文也提供了模拟数据,它表明在本工作中采用短的放大器和常规低功率放大器的特性存在重大区别。其中包括有限长度对增益特性影响,这可以构成放大器的窄带宽和出现边带。也发现电子束的群聚长度是放大器总长度的一个重要部分。
This article provides the dual-level, high frequency, high power, 8.76GHz traveling wave tube amplifier development results. This work expands upon the data previously reported for single-stage amplifiers and provides new data on the operation of two identical amplifiers in series with each other. During the entire pulse duration of the device, a peak power of 410 MW was obtained with a conversion efficiency of 45% for electron beam microwave energy. The isolation amplifier shows the sideband structure of the microwave radiation spectrum under all operating conditions. A similar phenomenon also occurs in single-stage devices with output powers in excess of 70 MW. Sideband frequency is not symmetrical about the center frequency. The largest single-frequency average output power is 210MW, the corresponding efficiency of 24%. This article also provides simulation data showing significant differences in the characteristics of using short and conventional low-power amplifiers in this work. This includes the effect of finite length on gain characteristics, which makes up the narrow bandwidth of the amplifier and the presence of sidebands. It has also been found that the length of the electron beam cluster is an important part of the overall amplifier length.