ULTRAHIGH GAIN GYROTRON TRAVELING WAVE AMPLIFIER
ULTRAHIGH GAIN GYROTRON TRAVELING WAVE AMPLIFIER
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DOI：
10.1103/physrevlett.81.4760
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发表时间：
1998-11
影响因子：
8.6
通讯作者：
K. Chu;H. Y. Chen;C. Hung;T. H. Chang;L. Barnett;Shih-Hung Chen;T. T. Yang-T.
中科院分区：
文献类型：
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作者：
K. Chu;H. Y. Chen;C. Hung;T. H. Chang;L. Barnett;Shih-Hung Chen;T. T. Yang-T.
回旋管行波放大器中的模式竞争与绝对/对流不稳定性、电路损耗和反射反馈之间的相互作用有着复杂的联系。分析和表征了杂散振荡的Ph源。对过程的基本理解导致了在超高增益下提供零驱动稳定性的器件概念。在Ka频段的原理验证实验中验证了sc，在26.5%的效率下产生93 kW的饱和峰值功率，70 dB增益和3 GHz的3 dB带宽。[s0031 - 9007 (98) 07703 - 5]
Mode competition in the gyrotron traveling wave amplifier is shown to be intricately connected to interplay between the absolute/convective instabilities, circuit losses, and reflective feedback. Ph origins of spurious oscillations are analyzed and characterized. Fundamental understanding of processes leads to a device concept which provides zero-drive stability at ultrahigh gain. The sc was verified in a proof-of-principle experiment in the Ka band, producing 93 kW saturated peak powe at 26.5% efficiency, 70 dB gain, and a 3 dB bandwidth of 3 GHz. [S0031-9007(98)07703-5]