发明授权
- 专利标题: Demodulation of phase modulated fibre-optic sensor system signals
- 专利标题(中): 相位调制光纤传感器系统信号的解调
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申请号: US12064480申请日: 2006-08-17
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公开(公告)号: US08023829B2公开(公告)日: 2011-09-20
- 发明人: Philip John Nash , David John Tyler , Nicholas Middleton
- 申请人: Philip John Nash , David John Tyler , Nicholas Middleton
- 申请人地址: GB
- 专利权人: Qinetiq Limited
- 当前专利权人: Qinetiq Limited
- 当前专利权人地址: GB
- 代理机构: McDonnell Boehnen Hulbert & Berghoff LLP
- 优先权: GB0517210.1 20050823
- 国际申请: PCT/GB2006/003065 WO 20060817
- 国际公布: WO2007/023260 WO 20070301
- 主分类号: H04B10/00
- IPC分类号: H04B10/00 ; H04B10/04
摘要:
Demodulation apparatus for demodulating phase-modulated signals comprises a quadrature signal generator (QSG) for generating in-phase (I) and quadrature-phase (Q) signals in response to an unmodulated input signal. The QSG provides fast frequency tracking of the input signal and excludes any high-frequency content the input signal.
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