高增益相对论速调管放大器相位特性的模拟与实验研究  

Simulation and experimental study of phase characteristics in high-gain relativistic klystron amplifier

作　　者：吴洋[1,2] 许州[1] 谢鸿全[3] 李正红[1] 马乔生[1] 

机构地区：[1]中国工程物理研究院应用电子学研究所,绵阳621900 [2]高功率微波技术重点实验室,绵阳621900 [3]西南科技大学理学院,绵阳621010

出　　处：《物理学报》2015年第8期125-130,共6页Acta Physica Sinica

基　　金：国家自然科学基金(批准号:61271109)资助的课题~~

摘　　要：为实现高功率微波的相干功率合成,开展了S波段高增益相对论速调管放大器输出微波相位特性的粒子模拟和实验研究,粒子模拟与实验结果均表明电子回流是影响输出微波相位特性的主要因素.在有效控制电子回流的情况下,实验实现输出微波相位抖动小于±10°,锁相时间达90 ns.以此计算,若相位抖动在±10°内满足均匀分布,十台该高增益相对论速调管放大器的功率合成效率将大于99%.In order to realize the combination of the coherent high power microwave, an 5=band high gain relativistic zlystron amplifier with high phase stability is presented and studied theoretically and experimentally. The phase characteristics of the output microwave are explored in particle-in-cell code and experiment. The experimental results accord well with the simulation results, which indicates that the parasitic oscillation excited by retrograde electrons is the main cause of phase variation in the development of high-gain relativistic klystron with high phase stability. When the input RF power is 10 kW, a microwave pulse with about =t=10~ in relative phase difference fluctuation between output and input is obtained in experiment. And the corresponding locking duration is about 90 ns. Accordingly, the expectation of power combination efficiency of 10 high-gain relativistic klystron amplifiers can be achieved to be 99% with continuous uniform distribution of random relative phase difference.

关 键 词：相对论速调管放大器 相位特性 功率合成 回流电子 

分 类 号：TN722[电子电信—电路与系统]