对极小型磁控管微波腔多普勒和腔牵引频移的分析  

Frequency Shift Analysis of Doppler and Cavity Pulling for Extremely Small Magnetron Microwave Cavity

作　　者：雒向东[1] 罗崇泰[2] 

机构地区：[1]兰州城市学院培黎工程技术学院,兰州730070 [2]中国空间技术研究院兰州物理研究所表面工程技术国家级重点实验室,兰州730000

出　　处：《航天制造技术》2010年第6期47-49,54,共4页Aerospace Manufacturing Technology

摘　　要：用Ansoft HFSS仿真软件建立了极小型氢频标磁控管微波腔模型结构,对仿真设计出的微波腔其多普勒和腔牵引频移进行了分析。在50℃时,将贮存泡温度变化控制在0.01℃范围内,多普勒相对频移可获得1.4×10-15频率准确度;当Qc=5×103时,腔谐振频率与原子跃迁频率差值小于5Hz,原子线宽小于1Hz时,谐振腔就满足振荡条件,并可保证腔牵引相对频移小于10-14。The mode of extremely small magnetron microwave cavity of hydrogen maser is built by Ansoft HFSS,and its frequency shift of Doppler and cavity pulling is analyzed.When the temperature of storage bulb changes within a limit of 0.01℃,the relative frequency shift of Doppler is 1.4×10-15 at 50℃.When Qc=5×103,the difference between cavity oscillation frequency and atom transition frequency is with a limit of 5Hz and the atom line broad is with a limit of 1Hz,the oscillation condition of microwave cavity is satisfied and the relative frequency shift outputted of cavity pulling is with a limit of 10-14.

关 键 词：磁控腔 多普勒频移 腔牵引频移 

分 类 号：V423.42[航空宇航科学与技术—飞行器设计]