High power radiators and E-field sensors for sub-nanosecond electromagnetic pulses

V. M. Fedorov, V. Y. Ostashev, V. Tarakanov, A. V. Ul’yanov
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引用次数: 4

Abstract

Paper describes the results and problems around creation and diagnostics both the high power radiators and the E-field strip-line sensors of the directional wave coupler type. They were used in technique of short electromagnetic pulsed (EMP) waves with ultra-wideband (UWB) frequency spectrum (0.1 GHz -10 GHz) and high pulsed power. The E-field strip-line antenna sensors connected to digital oscilloscopes were used to measure the pulsed electromagnetic transverse (TEM) travelingwaves. The high power pulsed radiators were constructed with the UWB radiation antennas of a TEM-horn type and the pulsed high power semiconductor generators (“FID Technology” comp). It was made models of compact autonomous radiators with the generators for 10-100 kV pulsed voltages and 1-100 kHz repetition rate pulses with control synchronizing. New E-field sensor of non-symmetrical two-wire type has dielectric stalk with high ε=16 and small cross-section. Sensors were tested experimentally by using the compact line-cell with TEM waves. The test results were the 0.32 V/(kV/m) E-field sensitivity, 0.03 ns rise-time and up to 7 ns pulse duration without signal distortions. The results were in good accordance with the computer simulation by electromagnetic 3-D code “KARAT”. The EMP radiation with the E(t)-field amplitudes of levels 10 kV/m can be successfully used to examine various electronic devices on electromagnetic compatibility (EMC).
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用于亚纳秒级电磁脉冲的高功率辐射器和e场传感器
本文介绍了大功率辐射器和定向波耦合器型电磁场带线传感器的研制和诊断结果及存在的问题。它们被用于超宽带(0.1 GHz -10 GHz)频谱的短电磁脉冲(EMP)技术和高脉冲功率。利用与数字示波器连接的电磁场带线天线传感器对脉冲电磁横行波进行了测量。高功率脉冲辐射体采用tem -喇叭型超宽带辐射天线和脉冲高功率半导体发生器(“FID Technology”comp)构成。建立了具有10- 100kv脉冲电压和1- 100khz重复频率脉冲控制同步发生器的紧凑型自主散热器模型。新型非对称双线式电场传感器具有高ε=16和小截面的介电杆。利用瞬变电磁波对传感器进行了实验测试。实验结果表明,该系统具有0.32 V/(kV/m)的电场灵敏度、0.03 ns的上升时间和长达7 ns的脉冲持续时间,且无信号畸变。结果与电磁三维代码“KARAT”的计算机模拟结果吻合较好。E(t)场幅值为10 kV/m的电磁脉冲辐射可以成功地用于检测各种电子设备的电磁兼容性(EMC)。
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