Experimental analysis of wide-spectrum oscillator with nonmatched transmission line
-
摘要: 设计了基于低阻形成线对非匹配传输线充电型宽谱振荡器，介绍了振荡器的工作原理。在数值模拟分析的基础上，完成了低阻形成线、非匹配传输线的结构设计。此宽谱振荡器在1 MV Marx实验平台上开展了实验研究，在主开关的间隙为14 mm、气压1.5 MPa，短路开关间隙为6 mm、气压1.0 MPa，锐化开关间隙为4 mm、气压1.1 MPa的条件下，实现了宽谱脉冲重复频率20 Hz稳定输出，中心频率达到260 MHz。采用低阻形成线对非匹配传输线充电技术，既实现了高功率宽谱振荡脉冲又提高了脉冲的中心频率。Abstract: The paper presents a high power wide band oscillator with nonmatched transmission line which is charged by low impedance forming line. The designs of low impedance forming line and nonmatched transmission line are completed accordingly and high voltage experiments are conducted on the 1 MV Marx generation. The wide band oscillator can output wide-spectrum pulse with center frequency 260 MHz, repeat rate 20 Hz when the gap of main switch is 14 mm with 1.5 MPa SF6, the gap of chopping switch is 6 mm with 1.0 MPa SF6, and the gap of peaking switch is 4 mm with 1.1 MPa SF6. The technology of nonmatched transmission line charged by low impedance forming line can output high power wide band pulse and increase center frequency.
-
Key words:
- wide-spectrum /
- nonmatched transmission line /
- chopping switch /
- peaking switch
-
图 1 形成线对非匹配传输线充电型高功率宽谱振荡器电路图
Figure 1. Equivalent circuit of the oscillator with no matching transmission lines
图 2 形成线T1，T2的充电波形及负载R2上的输出波形
Figure 2. Analog result on transmission lines T1, T2 and load R2
图 7 低阻形成线与非匹配传输线充电波形
Figure 7. Charging pulse of low impedance line and nonmatched line
-
[1] Prather W D, Baum C E, Torres R J, et al. Survey of worldwide high-power wideband capabilities[J]. IEEE Trans on Elec-mag Comp, 2004, 46(3): 335-344. doi: 10.1109/TEMC.2004.831826 [2] 廖勇, 谢平, 徐刚, 等. 高功率宽谱开关振荡器[J]. 强激光与粒子束, 2012, 24(4): 998-1002. doi: 10.3788/HPLPB20122404.0998Liao Yong, Xie Ping, Xu Gang, et al. High power wideband switched oscillator. High Power Laser and Particle Beams, 2012, 24(4): 998-1002 doi: 10.3788/HPLPB20122404.0998 [3] 丁恩燕, 张现福, 陆巍, 等. 短路-锐化开关组合形成超宽带双极脉冲实验分析[J]. 高电压技术, 2010, 36(10): 2555-2559. https://www.cnki.com.cn/Article/CJFDTOTAL-GDYJ201010039.htmDing En-yan, Zhang Xianfu, Lu Wei, et al. Experimental analysis of UWB bipolar pulse with chopping-peaking switch. High Voltage Engineering, 2010, 36(10): 2555-2559 https://www.cnki.com.cn/Article/CJFDTOTAL-GDYJ201010039.htm [4] 张现福, 丁恩燕, 陆巍, 等. 高功率超宽带双极脉冲产生技术[J]. 强激光与粒子束, 2010, 22(3): 489-493. http://www.hplpb.com.cn/article/id/4451Zhang Xianfu, Ding Enyan, Lu Wei, et al. High power ultra-wideband bipolar pulse formers. High Power Laser and Particle Beams, 2010, 22(3): 489-493 http://www.hplpb.com.cn/article/id/4451 [5] Yankelevich Y, Pokryvailo A. A compact former of high-power bipolar subnanosecond pulses[C]//15th IEEE International Pulsed Power Conference. 2005: 1186-1191. [6] Edson W A, Oetzel G N. Capacitance voltage divider for high-voltage pulse measurement[J]. Rev Sci Instrum, 1981, 52(4): 604-606. doi: 10.1063/1.1136644 [7] Barret D M, Byron S R, Crawford E A, et al. Low inductance capacitance probe for spark gap voltage measurements[J]. Rev Sci Instrum, 1985, 56(11): 1211-2115. [8] 丁恩燕, 张晋琪, 陆巍, 等. 非匹配传输线产生宽谱脉冲实验研究[J]. 强激光与粒子束, 2014, 26: 095006. doi: 10.11884/HPLPB201426.095006Ding Enyan, Zhang Jinqi, Lu Wei, et al. Experimental analysis of wide-spectrum pulse with no matching transmission line. High Power Laser and Particle Beams, 2014, 26: 095006 doi: 10.11884/HPLPB201426.095006 -
下载:
点击查看大图
图(9)
计量
- 文章访问数: 908
- HTML全文浏览量: 167
- PDF下载量: 103
- 被引次数: 0
