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为了克服强流高增益速调管放大器中的自激振荡和适应低阻抗脉冲功率源发展的需要,利用高阻抗X波段五腔高增益速调管放大器进行了离轴八注八管高增益速调管功率合成技术研究,在频率为9.47 GHz、模拟输出功率为284 MW、增益为51.6 d B和效率为35.5%条件下,该器件整管微波输出稳定.在三维模型中,在离轴54 mm条件下该器件的微波输出特性稳定.基于实验室现有4.5 T(长1.1 m,室温孔径为150 mm)超导磁体,进行了八注八管高增益速调管的整管模拟,每个器件实现284 MW的微波输出.最后,为实现GW级功率输出,利用HFSS软件设计了用于离轴八注八管高增益速调管功率合成的八合一功率合成器,将该合成器同八注八管高增益速调管结合,模拟得到功率为1.84 GW、增益为50.7 d B、效率为28.8%的微波输出.
In order to overcome the need of self-oscillation in high-current and high-gain klystron amplifiers and to adapt to the development of low-impedance pulsed power sources, a high-impedance X-band five-cavity high-gain klystron amplifier was used to off- In the study of power management technology, the microwave output of the whole tube is stable at the frequency of 9.47 GHz, the output power of 284 MW, the gain of 51.6 d B and the efficiency of 35.5%. In the three-dimensional model, mm, the microwave output characteristics of the device are stable.According to the laboratory’s existing 4.5 T (length of 1.1 m, room temperature aperture of 150 mm) superconducting magnet, And 284 MW microwave outputs were achieved by the device.Finally, in order to achieve the GW-level power output, an eight-in-one power combiner was designed by HFSS for power synthesis of off-axis eight-injection high-speed klystron tube. The synthesizer Eight high-gain klystron tubes were combined to simulate a microwave output of 1.84 GW with a gain of 50.7 d B and an efficiency of 28.8%.