发明授权
- 专利标题: Frequency-modulated signal receiver with digital demodulator
- 专利标题(中): 带数字解调器的调频信号接收机
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申请号: US10103575申请日: 2002-03-21
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公开(公告)号: US07379512B2公开(公告)日: 2008-05-27
- 发明人: Marc Joisson , Luc Garcia , Marc Gens
- 申请人: Marc Joisson , Luc Garcia , Marc Gens
- 申请人地址: FR Montrouge
- 专利权人: STMicroelectronics S.A.
- 当前专利权人: STMicroelectronics S.A.
- 当前专利权人地址: FR Montrouge
- 代理机构: Fleit Kain Gibbons Gutman Bongini & Bianco P.L.
- 代理商 Lisa K. Jorgenson; Stephen Bongini
- 优先权: FR0103788 20010321
- 主分类号: H03D3/24
- IPC分类号: H03D3/24
摘要:
A receiver of a frequency-modulated signal is provided. The receiver includes a frequency-transposition unit for lowering the frequency of the frequency-modulated signal, and a digital demodulator for regenerating a digital signal from the frequency-transposed signal. The frequency-transposition unit includes a local oscillator for generating a local oscillator signal used in lowering the frequency of the frequency-modulated signal. The frequency-transposed signal is sampled in the digital demodulator at the rate of a sampling signal, and the sampling signal is generated by the local oscillator of the frequency-transposition unit. In a preferred embodiment, the local oscillator includes at least one frequency-divider circuit that delivers the sampling signal. Also provided is a method for regenerating a digital signal from a frequency-modulated signal.
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