会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 3. 发明授权
    • Feedback systems for enhanced oscillator switching time
    • 用于增强振荡器切换时间的反馈系统
    • US06549079B1
    • 2003-04-15
    • US10008433
    • 2001-11-09
    • David T. Crook
    • David T. Crook
    • H03L700
    • H03L7/107H03L7/0898H03L7/095H03L7/18Y10S331/02
    • Feedback control loop systems are provided that enhance output-signal switching times without degrading other loop performance parameters. The systems reduce “kick-back” voltages that are generated in a loop filter by drive currents which rapidly drive a control loop oscillator to a loop acquisition range. This reduction reduces a frequency step in the oscillator output signal which would otherwise have to be driven to eliminate the frequency step with a consequent increase in the output-signal switching time. Structures are provided that reduce the kick-back voltage to thereby enhance output-signal switching times.
    • 提供了反馈控制回路系统,可以增强输出信号切换时间,而不会降低其他回路性能参数。 系统通过驱动电流降低在环路滤波器中产生的“反冲”电压,驱动电流将控制环路振荡器快速驱动到回路采集范围。 这种减少减少了振荡器输出信号中的频率步长,否则,必须驱动振荡器输出信号以消除频率步长,从而导致输出信号切换时间的增加。 提供了降低反冲电压从而增强输出信号切换时间的结构。
    • 4. 发明授权
    • Adaptive feedback-loop controllers and methods for rapid switching of oscillator frequencies
    • 自适应反馈回路控制器和快速切换振荡器频率的方法
    • US06522206B1
    • 2003-02-18
    • US09973281
    • 2001-10-09
    • John J. KornblumDavid T. Crook
    • John J. KornblumDavid T. Crook
    • H03L700
    • H03L7/107H03L7/0898H03L7/095H03L7/113Y10S331/02
    • Feedback methods and systems are provided to achieve rapid switching of oscillator frequencies without compromising operational feedback loop bandwidths that filter out spurious tones and phase noise to thereby enhance loop spectral and noise performance. The methods respond to frequency changes in a reference signal by providing an open-loop drive current to drive a feedback signal towards the reference signal. The drive current is terminated and the feedback control loop closed when the feedback signal is within a predetermined acquisition range of the reference signal. This is determined by successively comparing a feedback frequency of the feedback signal to a destination frequency of the reference signal over a comparison window of time. The invention also provides a feedback control system that practices the invention's methods.
    • 提供反馈方法和系统以实现振荡器频率的快速切换,而不会影响滤除伪噪声和相位噪声的操作反馈环路带宽,从而增强环路频谱和噪声性能。 该方法通过提供开环驱动电流来驱动参考信号的反馈信号来响应参考信号中的频率变化。 当反馈信号在参考信号的预定采集范围内时,驱动电流终止并且反馈控制回路闭合。 这通过在比较时间窗口上连续地比较反馈信号的反馈频率与参考信号的目的地频率来确定。 本发明还提供了实现本发明方法的反馈控制系统。