首页> 外文期刊>Chinese Journal of Electronics >Second Harmonic Suppression for Broadband Helix Traveling-Wave Tubes Using the Phase Velocity Variation of Output Circuit
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Second Harmonic Suppression for Broadband Helix Traveling-Wave Tubes Using the Phase Velocity Variation of Output Circuit

机译:利用输出电路的相速度变化对宽带螺旋行波管进行二次谐波抑制

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摘要

Based on the principle of phase velocity tapering or stepping output circuit, using the phase velocity variation of the output circuit, four kinds of nonuniform output circuit models have been presented in broadband helix Traveling-wave tubes (TWTs). Taking an example of 6-18GHz, 100W broadband helix TWT and using the improved one-dimensional large signal program, second harmonic suppression performances have been studied by calculating the quantitative relationship between fundamental efficiency, second harmonic output power, and the stepping (tapering) position and strength of phase velocity variation for the four kinds of nonuniform output circuits. From the research results of backward wave and second harmonic suppression feature in two kinds of nonuniform output circuits, we obtained the design principle of phase velocity stepping or tapering, which could suppress the Backward wave oscillation (BWO) and reduce the output power of second harmonic for broadband high-power helix TWTs.
机译:基于相速度渐减或步进输出电路的原理,利用输出电路的相速度变化,在宽带螺旋行波管(TWTs)中提出了四种非均匀输出电路模型。以6-18GHz,100W宽带螺旋TWT为例,并使用改进的一维大信号程序,通过计算基本效率,二次谐波输出功率和步进(渐缩)之间的定量关系,研究了二次谐波抑制性能。四种非均匀输出电路的相速度变化的位置和强度。通过对两种非均匀输出电路中反向波和二次谐波抑制特性的研究结果,得出了相速度步进或渐减的设计原理,可以抑制反向波振荡(BWO),降低二次谐波的输出功率。适用于宽带大功率螺旋TWT。

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