摘要
以罗埃大信号理论为基础 ,利用两节螺距具有正负变化的双跳变输出电路对提高宽带行波管效率的二次谐波抑制问题进行了模拟。对输出电路的跳变位置和跳变螺距进行了详细研究。模拟与测试结果证明 :采用双跳变输出线路 ,在低频端二次谐波受到很大抑制 ,正向基波分量得到明显增强 ,在宽频带 (6～ 18GHz)范围内 ,获得了均衡的饱和功率输出。
The second harmonic suppression for wide band miniature high efficiency TWT, based on Rowe large signal theory, is simulated using two section helix output circuit with a positive step and a negative step in this paper. The locations and pitches of two steps are investigated in detail.The simulation and test results indicate that the second harmonic is suppressed greatly and the forward fundamental output power is increased obviously at the lower frequency band.The change of the saturated power output is smoothed over the entire bandwidth (6 to 18 GHz) using this optimized circuit.
出处
《真空电子技术》
2003年第1期30-34,共5页
Vacuum Electronics
基金
大功率微波电真空器件技术国家重点实验实验室研究基金项目。
关键词
高效率行波管
二次谐波抑制
大信号理论
动态速度渐变
双跳变输出电路
High efficiency TWT
Large signal theory
Dynamic velocity taper
Two section step output circuit
Harmonic suppression
