并行多注THz折叠波导行波管的理论分析与数值模拟 |
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引用本文: | 颜胜美,苏伟,王亚军,陈樟,金大志,向伟. 并行多注THz折叠波导行波管的理论分析与数值模拟[J]. 强激光与粒子束, 2014, 26(8): 083105. DOI: 10.11884/HPLPB201426.083105 |
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作者姓名: | 颜胜美 苏伟 王亚军 陈樟 金大志 向伟 |
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作者单位: | 1.中国工程物理研究院 电子工程研究所, 四川 绵阳 621 900 |
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基金项目: | 中国工程物理研究院超精密加工技术重点实验室项目(2012CJMZZ00007) |
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摘 要: | 为了提高THz行波管的输出功率,通过并行多注和功率合成的方法,完成了并行多注D波段折叠波导行波管的理论分析与数值模拟。计算结果表明:单束行波管在0.135~0.157THz频率区间具有很好的色散平坦度,3dB带宽为13GHz,0.14THz处获得了20.88dB的最大增益;多束合成行波管在0.14THz处获得了20.8dB的合成增益,3dB带宽区间合成效率不低于92%。数值模拟表明该方法很好地实现了多路放大信号的合成输出。并行多注行波管具有输出功率大、单束电流小、聚焦磁场低等优点,能够在低发射电流密度条件下实现大功率THz辐射。
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关 键 词: | THz行波管 折叠波导 并行多注 合成效率 3 dB带宽 |
收稿时间: | 2014-02-21 |
Theoretical analysis and numerical simulation of parallel multi-beam THz folded waveguide traveling-wave tube |
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Affiliation: | 1.Institute of Electronic Engineering,CAEP,Mianyang 621900,China |
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Abstract: | In order to increase the output power of THz traveling-wave tube(TWT), by parallel multi-beam and power combining method, theoretical analysis and numerical simulation of parallel multi-beam D band folded TWT waveguide have been done, and simulation results demonstrate that the method can achieve the power combining output of multi-amplified signals. The results show: the single-beam mode TWT owns flat dispersion characteristics between 0.135 THz and 0.157 THz. The 3 dB gain band is 13 GHz and the largest gain is 20.88 dB at 0.14 THz. The multi-beam mode TWT got 20.8 dB combining gain at 0.14 THz and the combining efficiency is not below 92% in 3 dB gain frequency range. The parallel multi-beam mode TWT has many merits, such as high output power, small single-beam current and lower focusing magnetic field. The study helps achieving high power THz radiation basing on the present heat cathode level. |
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Keywords: | THz travelling-wave tube folded waveguide parallel multi-beam combining efficiency 3 dB band |
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