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    • 4. 发明授权
    • Method and device for stabilizing a transfer function of a digital phase locked loop
    • 稳定数字锁相环传递函数的方法和装置
    • US07358820B2
    • 2008-04-15
    • US11477578
    • 2006-06-29
    • Nicola Da Dalt
    • Nicola Da Dalt
    • H03L7/00
    • H03L7/093H03L7/107H03L2207/50
    • In a method for stabilizing a transfer function of a digital phase locked loop a random digital signal is fed into the phase locked loop. The phase locked loop comprises the transfer function and a phase locked loop gain which changes with time due to disturbances and the random digital signal comprises a predetermined variance. The transfer function depends from the phase locked loop gain. A cross correlation function is generated by cross correlating a signal of the phase locked loop with the random signal and an impulse response is estimated between the random signal and the signal of the phase locked loop by means of the cross correlation function and the predetermined variance of the random signal. The transfer function of the phase locked loop is set in dependence on the estimated impulse response.
    • 在稳定数字锁相环的传递函数的方法中,将随机数字信号馈送到锁相环。 锁相环包括由于干扰而随时间变化的传递函数和锁相环增益,并且随机数字信号包括预定的方差。 传递函数取决于锁相环增益。 通过将锁相环的信号与随机信号相互相关来产生互相关函数,并且通过互相关函数和相关函数和相关函数的预定方差在随机信号和锁相环的信号之间估计脉冲响应 随机信号。 根据估计的脉冲响应来设定锁相环的传递函数。
    • 6. 发明申请
    • Method and device for controlling an oscillator
    • 用于控制振荡器的方法和装置
    • US20050077970A1
    • 2005-04-14
    • US10920707
    • 2004-08-18
    • Nicola Da DaltSven Derksen
    • Nicola Da DaltSven Derksen
    • H03L7/00H03L7/099H03L7/10H03L7/18
    • H03L7/10H03L7/18H03L2207/06
    • A method and a device for controlling an oscillator (1) are proposed, wherein a first control signal (b) is generated depending on an output signal (e) of the oscillator (1) and on a first reference signal (a), and a second control signal (d) is generated depending on the first control signal (b) and on a second reference signal (c), and wherein the oscillator (1) is subjected to the first control signal (b) and to the second control signal (d) and generates the output signal (e) with a frequency dependent on the first control signal (b) and on the second control signal (d). A low-noise phase locked loop with a large possible frequency range can be realised by such a method and such a device.
    • 提出了一种用于控制振荡器(1)的方法和装置,其中根据振荡器(1)的输出信号(e)和第一参考信号(a)产生第一控制信号(b),以及 根据第一控制信号(b)和第二参考信号(c)产生第二控制信号(d),并且其中振荡器(1)经受第一控制信号(b)和第二控制信号 信号(d),并产生具有取决于第一控制信号(b)的频率和第二控制信号(d)的输出信号(e)。 通过这种方法和这种装置可以实现具有可能的频率范围很大的低噪声锁相环。