发明授权
US06731681B1 Method for determining the frequency instability noise from a source and a device for implementing the method
有权
用于确定来自源和用于实现该方法的设备的频率不稳定性噪声的方法
- 专利标题: Method for determining the frequency instability noise from a source and a device for implementing the method
- 专利标题(中): 用于确定来自源和用于实现该方法的设备的频率不稳定性噪声的方法
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申请号: US09494496申请日: 2000-01-31
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公开(公告)号: US06731681B1公开(公告)日: 2004-05-04
- 发明人: Christian Delmas
- 申请人: Christian Delmas
- 优先权: FR9901087 19990201
- 主分类号: H04B120
- IPC分类号: H04B120
摘要:
A method and device for measuring frequency instability noise &Dgr;TRMS from a source includes measuring the signal to noise ratio SRN1 at the output from a circuit having an input to receive a frequency input signal ft, an output to supply an output signal, and a sequencing input to receive a clock signal, and determining the signal to noise ratio SRN2 at the output from the circuit, the input signal being the frequency input signal ft and the clock signal being a signal coming from the source. The frequency instability noise &Dgr;TRMS is then calculated from SRN1, SRN2 and ft.
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