发明公开
- 专利标题： Frequency standard using hydrogen maser
- 专利标题（中）： 使用氢气MASTER的频率标准频率标准
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申请号： EP87107357申请日： 1987-05-20
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公开(公告)号： EP0248276A3公开(公告)日： 1988-07-20
- 发明人: Stein, Samuel R. , Lewis, Lindon L. , Smith, Thomas E.
- 申请人： BALL CORPORATION
- 专利权人： BALL CORPORATION
- 当前专利权人： BALL CORPORATION
- 优先权： US866827 19860523
- 主分类号： H01S01/06
- IPC分类号： H01S01/06 ; G04F05/14 ; H03L07/26 ; H01P07/06
摘要：
The invention provides a frequency standard, comprising:
frequency-generating means (100) for generating electromagnetic energy at variable frequencies;
a hydrogen maser (10) including means (12,13,19) to direct a stream of hydrogen atoms at a hyperfine energy state into a microwave cavity assembly (52) to generate electromagnetic energy at hydrogen resonance frequency; and
an electronic means (120) to control the frequency of said frequency-generating means (100) to maintain a standard frequency with the electromagnetic energy generated by said hydrogen maser (10),
said microwave cavity assembly (52) including a dielectric container defining by its outer surfaces a microwave cavity that is tuned to about hydrogen resonance frequency and including a discontinuous conductive coating on its outer surface in a predetermined configuration to suppress undesired oscillation of the microwave cavity.
frequency-generating means (100) for generating electromagnetic energy at variable frequencies;
a hydrogen maser (10) including means (12,13,19) to direct a stream of hydrogen atoms at a hyperfine energy state into a microwave cavity assembly (52) to generate electromagnetic energy at hydrogen resonance frequency; and
an electronic means (120) to control the frequency of said frequency-generating means (100) to maintain a standard frequency with the electromagnetic energy generated by said hydrogen maser (10),
said microwave cavity assembly (52) including a dielectric container defining by its outer surfaces a microwave cavity that is tuned to about hydrogen resonance frequency and including a discontinuous conductive coating on its outer surface in a predetermined configuration to suppress undesired oscillation of the microwave cavity.
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