| 高触发信号和功率合成的高峰值功率皮秒脉冲源 |
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| 引用本文： | 张雅茹,陈袭,李杨,杨宏春,魏召唤.高触发信号和功率合成的高峰值功率皮秒脉冲源[J].强激光与粒子束,2022,34(6):065001-1-065001-8. |
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| 作者姓名： | 张雅茹 陈袭 李杨 杨宏春 魏召唤 |
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| 作者单位： | 电子科技大学 物理学院，成都 611731 |
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| 基金项目： | 国家自然科学基金项目（61871071）； |
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| 摘 要： | 对于目标的攻击、干扰和探测，超宽带时域脉冲源的幅值直接影响其攻击、干扰和探测的强度和效果。基于雪崩晶体管的Marx电路被广泛应用在产生此类信号源上，传统的Marx电路可以一定程度上提高输出电压的幅值，但由于雪崩晶体管功率容量较低等原因，雪崩晶体管的Marx电路输出电压幅度会随级数增加而达到饱和。针对此类问题，为了产生更高幅值的脉冲信号，综合采用提高触发信号和使用宽带功率合成器的手段。最终利用26级Marx电路作为触发信号，4路40级Marx电路进行功率合成的方法，实现了输出电压幅值为8.7 kV、上升沿约为180 ps的技术指标，并通过机理分析了高触发信号对雪崩晶体管Marx电路的影响，通过实验得到了印证。
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| 关 键 词： | 高电压触发信号 高功率脉冲源 皮秒脉冲源 雪崩三极管 Marx电路 |
| 收稿时间： | 2021-10-22 |
High-power picosecond pulse source based on high trigger signal and power synthesis |
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| Affiliation: | School of Physics, University of Electronic Science and Technology of China, Chengdu 611731, China |
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| Abstract: | For the attack, interference and detection of the target, the amplitude of the UWB time-domain pulse source directly affects the intensity and effect. The Marx circuit based on avalanche transistors is widely used to generate such signal sources. The traditional Marx circuit can increase the amplitude of the output voltage to a certain extent. However, due to the low power capacity of the avalanche transistor, the output voltage of the Marx circuit of the avalanche transistor is low. The amplitude will reach saturation with the increase of the number of stages. To generate a higher amplitude pulse signal, this study comprehensively adopts the means of increasing the trigger signal and using a broadband power combiner. Finally it uses a 26-level Marx circuit as the trigger signal, by the method of 4-channel 40-level Marx circuit for power synthesis, the output voltage amplitude is 8.7 kV, the rising edge is about 180 ps, and the impact of high trigger signal on the avalanche transistor Marx circuit is analyzed through mechanism. The experiment was confirmed. |
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