WIDEBAND DIRECT MODULATION WITH TWO-POINT INJECTION IN DIGITAL PHASE LOCKED LOOPS

    公开(公告)号:US20170194975A1

    公开(公告)日:2017-07-06

    申请号:US15469073

    申请日:2017-03-24

    Abstract: A digitally controlled oscillator (DCO) modulation apparatus and method provides a wideband phase-modulated signal output. An exemplary modulator circuit uses an oscillator in a phase-locked loop. The circuit receives a wrapped-phase input signal, unwraps the wrapped-phase input signal to generate an unwrapped-phase signal, and differentiates the unwrapped-phase signal. The wrapped-phase input signal and the differentiated unwrapped-phase signal are both injected into a feedback loop of the modulator circuit. The feedback loop may include a multi-modulus frequency divider with a frequency divisor that is temporarily incremented or decremented to cancel out abrupt phase jumps associated with the wrapped-phase to unwrapped-phase conversion.

    Wideband direct modulation with two-point injection in digital phase locked loops

    公开(公告)号:US09985638B2

    公开(公告)日:2018-05-29

    申请号:US15469073

    申请日:2017-03-24

    Abstract: A digitally controlled oscillator (DCO) modulation apparatus and method provides a wideband phase-modulated signal output. An exemplary modulator circuit uses an oscillator in a phase-locked loop. The circuit receives a wrapped-phase input signal, unwraps the wrapped-phase input signal to generate an unwrapped-phase signal, and differentiates the unwrapped-phase signal. The wrapped-phase input signal and the differentiated unwrapped-phase signal are both injected into a feedback loop of the modulator circuit. The feedback loop may include a multi-modulus frequency divider with a frequency divisor that is temporarily incremented or decremented to cancel out abrupt phase jumps associated with the wrapped-phase to unwrapped-phase conversion.

    WIDEBAND DIRECT MODULATION WITH TWO-POINT INJECTION IN DIGITAL PHASE LOCKED LOOPS
    4.
    发明申请
    WIDEBAND DIRECT MODULATION WITH TWO-POINT INJECTION IN DIGITAL PHASE LOCKED LOOPS 有权
    带数字相位锁定的两点注射的宽带直接调制

    公开(公告)号:US20160322980A1

    公开(公告)日:2016-11-03

    申请号:US15207266

    申请日:2016-07-11

    Abstract: A digitally controlled oscillator (DCO) modulation apparatus and method provides a wideband phase-modulated signal output. An exemplary modulator circuit uses an oscillator in a phase-locked loop. The circuit receives a wrapped-phase input signal, unwraps the wrapped-phase input signal to generate an unwrapped-phase signal, and differentiates the unwrapped-phase signal. The wrapped-phase input signal and the differentiated unwrapped-phase signal are both injected into a feedback loop of the modulator circuit. The feedback loop may include a multi-modulus frequency divider with a frequency divisor that is temporarily incremented or decremented to cancel out abrupt phase jumps associated with the wrapped-phase to unwrapped-phase conversion.

    Abstract translation: 数字控制振荡器(DCO)调制装置和方法提供宽带相位调制信号输出。 示例性调制器电路在锁相环中使用振荡器。 电路接收缠绕相输入信号,展开包络相输入信号以产生展开相位信号,并对展开相位信号进行微分。 包络相输入信号和微分解包相位信号都被注入到调制器电路的反馈回路中。 反馈回路可以包括具有暂时增加或减小的频率除数的多模式分频器,以消除与包绕相位相关的突变相位跳变到展开相位转换。

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