公开(公告)号：US09391625B1

公开(公告)日：2016-07-12

申请号：US14667368

申请日：2015-03-24

Applicant: Innophase, Inc.

Inventor： Yang Xu ,  Fa Foster Dai ,  Dongyi Liao

IPC: H03L7/06 ,  H03L7/099

CPC classification number: H03L7/0992 ,  H03B5/1215 ,  H03B5/1228 ,  H03B5/1243 ,  H03C3/0925 ,  H03C3/0941 ,  H03C3/095

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。