研究了一种应用于铷原子频标的磁控管腔,对用于磁控管腔的主要特征和参数计算进行了研究,主要包括磁控管腔的谐振频率、Q值、微波场模式。 研究结果表明磁控管腔的谐振频率可以调谐至6.835 GHz,Q值都能够调至600～1000之间,其微波场谐振模式是典型的TE011 模式,频率 温度系数较小(32.5～35.0 kHz/℃),所设计的磁控管腔能够满足铷原子钟物理部分的设计要求。

The magnetron cavity was developed for use in the rubidium atomic frequency standards, through which the main characteristics of the magnetron cavity were studied, mainly including the resonant frequency, quality factor, oscillation mode. The results show that the resonant frequency of the magnetron cavity can be attenuated to 6.835 GHz, which is the resonant frequency for rubidium atoms, and Q-factor can be attenuated to 600～1000, the oscillation mode is typical TE011 mode which is needed for the rubidium atomic frequency standard, and the cavity has a lower frequency temperature coefficient (32.5～35.0 kHz/℃), therefore these derivative magnetron cavities can meet the requirements for rubidium atomic frequency standards well.