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    • 5. 发明授权
    • Tuneless narrow-band super-regenerative receiver
    • 无带窄带超再生接收机
    • US06904101B1
    • 2005-06-07
    • US09506043
    • 2000-02-17
    • Qingfeng Tang
    • Qingfeng Tang
    • H03D11/02H03D11/06H04B1/30H04B1/16
    • H03D11/06H03D11/02H04B1/30
    • A super-regenerative receiver is provided with a regenerative oscillator controlled by a frequency sweep circuit to control the bandwidth at which the receiver can receive a signal. A quench control circuit controls both the regenerative oscillator and the frequency sweeping circuit to “turn on” at the same time. The frequency sweep circuit forces the regenerative oscillator to function as a center frequency movable bandpass filter allowing the receiver to automatically tune to the actual transmitter frequency ftx to provide the best reception. This allows the receiver/filter bandwidth to be very narrow. The receiver operates as an amplitude detector, as well as a frequency or phase detector, thereby allowing the same receiver to detect AM (ASK) signals and FM or FSK signals without adding a frequency discriminator.
    • 超再生接收机设置有由频率扫描电路控制的再生振荡器,以控制接收机可以接收信号的带宽。 淬火控制电路同时控制再生振荡器和扫频电路“同时”。 频率扫描电路迫使再生振荡器用作中心频率可移动带通滤波器,允许接收机自动调谐到实际的发射机频率f x tx,以提供最佳的接收。 这允许接收器/滤波器带宽非常窄。 接收器作为幅度检测器以及频率或相位检测器工作,从而允许相同的接收机在不添加鉴频器的情况下检测AM(ASK)信号和FM或FSK信号。