Chaotic millimeter wave generation in a helical-waveguide gyro-TWT with delayed feedback
Chaotic millimeter wave generation in a helical-waveguide gyro-TWT with delayed feedback
复制标题
具有延迟反馈的螺旋波导陀螺行波管中的混沌毫米波生成
DOI：
10.1063/1.4964918
复制
发表时间：
2016
影响因子：
2.2
通讯作者：
V. Tarakanov
中科院分区：
文献类型：
--
作者：
N. Ginzburg;R. Rozental;A. Sergeev;I. Zotova;V. Tarakanov
通过引入外部延迟反馈，我们证明了在宽带螺旋波导回旋管行波管中产生混沌毫米波的可能性。结果表明，为了实现“发达”混沌，放大器的幅值特性应在饱和后的超速状态下具有最大斜率。这可以通过选择合适的回旋共振失谐来实现。根据实验实现的35 GHz陀螺行波管的时域平均模型和三维细胞内粒子模拟，混沌产生功率可达到50 kW，电子平均效率约为7%，频谱宽度为3-4 GHz。
We demonstrate the possibility of chaotic millimeter wave generation in broadband helical-waveguide gyrotron travelling wave tubes (gyro-TWTs) by introducing external delayed feedback. It is shown that for the realization of “developed” chaos the amplitude characteristic of the amplifier should have the maximum slope in the overdrive regime upon saturation. This can be achieved by proper choosing of cyclotron resonance detuning. According to the time-domain averaged model and 3D particle-in-cell simulations with the parameters of the experimentally realized 35 GHz gyro-TWT, the power of chaotic generation can achieve 50 kW for an electron mean efficiency of about 7% and a spectrum width of 3–4 GHz.
影响因子：
4
作者：
A. Cross;Wenlong He;A. Phelps;K. Ronald;C. Whyte;A. Young;C. Robertson;E. G. Rafferty;J. Thomso
通讯作者：
A. Cross;Wenlong He;A. Phelps;K. Ronald;C. Whyte;A. Young;C. Robertson;E. G. Rafferty;J. Thomso