发明公开
EP1917500A1 DEMODULATION OF PHASE MODULATED FIBRE-OPTIC SENSOR SYSTEM SIGNALS 有权
一个移相器的光学传感器系统的相位调制信号的解调

  • 专利标题: DEMODULATION OF PHASE MODULATED FIBRE-OPTIC SENSOR SYSTEM SIGNALS
  • 专利标题(中): 一个移相器的光学传感器系统的相位调制信号的解调
  • 申请号: EP06765299.0
    申请日: 2006-08-17
  • 公开(公告)号: EP1917500A1
    公开(公告)日: 2008-05-07
  • 发明人: NASH, Philip, JohnTYLER, David, JohnMIDDLETON, Nicholas
  • 申请人: QINETIQ LIMITED
  • 申请人地址: 85 Buckingham Gate London SW1E 6PD GB
  • 专利权人: QINETIQ LIMITED
  • 当前专利权人: QINETIQ LIMITED
  • 当前专利权人地址: 85 Buckingham Gate London SW1E 6PD GB
  • 代理机构: Northway, Daniel Robert
  • 优先权: GB0517210 20050823
  • 国际公布: WO2007023260 20070301
  • 主分类号: G01D5/353
  • IPC分类号: G01D5/353
DEMODULATION OF PHASE MODULATED FIBRE-OPTIC SENSOR SYSTEM SIGNALS
摘要:
Demodulation apparatus (150) for demodulating phase-modulated signals comprises a quadrature signal generator (QSG) (157) 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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