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首页> 外文期刊>IEEE Transactions on Plasma Science >Phase Control in Parallel Channels of Shock-Excited Microwave Nanosecond Oscillators
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Phase Control in Parallel Channels of Shock-Excited Microwave Nanosecond Oscillators

机译:激波微波纳秒振荡器并行通道中的相位控制

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摘要

The theoretical premises and experimental results of phase control in high-power microwave oscillators with nanosecond pulse duration are presented. In experiments, two-channel backward wave oscillators (BWOs) for both steady state (100–150 cycles) and super-radiance (SR) mode operation (10–20 cycles) are discussed. For the phase control, the shift of the moment with fastest current rise is provided in the sections of nonlinear transmission lines with axially biased ferrites. The voltage pulse sharpening and shift of group velocity depend on the dc axial magnetic field. In SR mode, two-channel source is capable of producing 2 $,times,$0.3 GW pulses with duration of 2 ns and the center frequency of 10 GHz. The source operates at the repetition rate up to 100 pps with electronic control of the phase in one channel relative to another. The last experiment is carried out using two synchronized compact RADAN-type drivers with two parallel Ka-band BWOs (100 MW, 2 ns, 37 GHz). The controllable shift of interference picture is a proof of the coherency in the aggregated radiation. At the maximum of the pattern in the far zone, the detector indicateds fourfold increase in power density over that measured from single channel.
机译:提出了纳秒级脉冲持续时间的大功率微波振荡器相位控制的理论前提和实验结果。在实验中,讨论了稳态(100–150个周期)和超辐射(SR)模式操作(10–20个周期)的两通道反向波振荡器(BWO)。对于相位控制,在带有轴向偏置铁氧体的非线性传输线部分中提供了电流上升最快的力矩的偏移。电压脉冲的锐化和群速度的移动取决于直流轴向磁场。在SR模式下,两通道源能够产生2个持续时间为2 ns的2个 $,times,$ 0.3 GW脉冲。中心频率为10 GHz。在一个通道相对于另一个通道的相位的电子控制下,信号源以高达100 pps的重复速率工作。最后一个实验是使用两个同步的紧凑型RADAN型驱动器和两个并行的Ka波段BWO(100 MW,2 ns,37 GHz)进行的。干涉图像的可控制偏移证明了聚集辐射的相干性。在远区的最大模式下,检测器显示出功率密度是单通道测量功率密度的四倍。

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