SLED模型的完善和3dB耦合器性能研究  

Improvement of the SLED Model and Study of 3dB Coupler Performance

作　　者：李林[1,2] 顾强[1] 

机构地区：[1]中国科学院上海应用物理研究所,上海201800 [2]中国科学院大学,北京100049

出　　处：《核电子学与探测技术》2015年第2期180-184,共5页Nuclear Electronics & Detection Technology

摘　　要：采用通用的非理想3d B耦合器散射矩阵进行模型完善。利用这一完善的模型对3d B误差进行了分析,研究了3d B耦合器误差对能量倍增器的倍增因子、输出信号峰值和反射信号峰值的影响。为制造和加工3d B耦合器的所允许的误差及其控制提供了理论参考。结果表明:功率分配不平衡误差及其相位关系偏差均可导致能量倍增因子的下降和部分功率发射回速调管。在能量倍增因子的平坦度要求控制在0.02%以内时,3d B耦合器的功率不平衡因子δ<0.035,相位偏差θ<10。The improvement of the SLED model is made by using the non-ideal 3 dB coupler instead of the ideal 3 dB coupler.The error effect of the 3 dB coupler on the SLED performance has been studied by this modi-fied model.These analyses provide theoretical reference of the manufacturing errors and control of the 3 dB coupler.Both power imbalance error and phase difference deviation will decrease the energy multiplication factor and cause reflection of the RF power back to the klystron.If the power imbalance error is controlled in less than 0.035 and the phase difference deviation less than 1 degree, the flatness of the energy multiplication factor can be controlled within less than 0.02%.

关 键 词：SLAC能量倍增器 3dB耦合器 RF脉冲压缩器 能量倍增因子 

分 类 号：TL821[核科学技术—核技术及应用]