Double mode modulator
    2.
    发明授权
    Double mode modulator 失效
    双模式调制器

    公开(公告)号:US6069537A

    公开(公告)日:2000-05-30

    申请号:US124142

    申请日:1998-07-29

    CPC classification number: H04L27/0008 H04B1/406 H04L27/2071 H04B1/00

    Abstract: A double mode modulator, particularly, for a portable telephone, which is adapted to realize both digital and analog modulations and have a low phase noise and a reduced locking time with a device readily integrated in an integrated circuit, including: a frequency synthesizer for synthesizing a particular frequency from an external reference clock signal; a digital modulator for performing a quadrature modulation for an output signal of the frequency synthesizer; and an analog modulator for performing a frequency modulation for the output signal of the frequency synthesizer.

    Abstract translation: 一种双模式调制器,特别是用于便携式电话,其适于实现数字和模拟调制,并且具有低相位噪声和减少的锁定时间,其中易于集成在集成电路中的器件包括:用于合成的频率合成器 来自外部参考时钟信号的特定频率; 用于对频率合成器的输出信号执行正交调制的数字调制器; 以及用于对频率合成器的输出信号执行频率调制的模拟调制器。

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