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    • 1. 发明申请
    • Phase modulator
    • 相位调制器
    • US20070247239A1
    • 2007-10-25
    • US11472447
    • 2006-06-22
    • Jaako O. MaunukselaMikael SvardAri Vilander
    • Jaako O. MaunukselaMikael SvardAri Vilander
    • H03B27/00
    • H03C3/40
    • A modulator, comprising an input unit configured to receive a modulating signal, a control unit configured to provide a control signal on the basis of the modulating signal, an oscillating unit configured to provide a plurality of instances of at least two phase components of a carrier frequency signal, a phase selector configure to select, on the basis of the control signal, a combination of the phase component instances so that an output signal representing the information contents of the modulating signal is obtained, and a combiner configured to combine the selected phase component instances to form a modulated output signal.
    • 一种调制器,包括被配置为接收调制信号的输入单元,被配置为基于调制信号提供控制信号的控制单元,被配置为提供载波的至少两个相位分量的多个实例的振荡单元 频率信号,相位选择器,其被配置为基于所述控制信号选择所述相位分量实例的组合,从而获得表示所述调制信号的信息内容的输出信号;以及组合器,被配置为将所选择的相位 组件实例以形成调制输出信号。
    • 5. 发明授权
    • Method and apparatus providing resampling function in a modulus prescaler of a frequency source
    • 在频率源的模拟预分频器中提供重采样功能的方法和装置
    • US06784751B2
    • 2004-08-31
    • US09955874
    • 2001-09-18
    • Mika SalmiMikael Svard
    • Mika SalmiMikael Svard
    • H03L700
    • H03K21/40H03K21/08H03L7/193
    • A resampling technique is used to reduce the noise and improve the signal quality in the output of a prescaler circuit (10). The resampling of the output of a last frequency divider stage is accomplished using at least one flip/flop (FF) (e.g., a D-type FF 18) that is clocked by a signal obtained from the input of the prescaler. This reduces or eliminates the noise caused by edge jitter in the output of the prescaler, as well as the effect of spurious signals generated by the prescaler. These teachings can be used in integer N PLLs and in fractional N PLLs, as well as in single and programmable dual or multi-modulus prescalers. Using this technique the current consumption of the prescaler frequency dividers (12, 14, 16) need not be increased in an effort to reduce the prescaler noise, thereby conserving current in battery powered and other applications.
    • 重采样技术用于降低噪声并提高预分频器电路输出中的信号质量(10)。 使用由从预分频器的输入获得的信号计时的至少一个触发器(FF)(例如,D型FF18)来实现最后一个分频器级的输出的重新采样。 这会降低或消除由预分频器的输出引起的边沿抖动引起的噪声,以及由预分频器产生的杂散信号的影响。 这些教导可用于整数N个PLL和分数N个PLL,以及单个和可编程的双模或多模预分频器。 使用这种技术,不需要增加预分频器分频器(12,14,16)的电流消耗,以减少预分频器噪声,从而节省电池供电和其他应用中的电流。