Modulation methods primarily through changes in the rate of sine wave, phase and frequency to transmit information.

调制的方法主要是通过改变正弦波的幅度、相位和频率来传送信息。

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The operating principle and performance of fractional-N phase locked loop (FNPLL) are described in detail, and the methods of suppressing FNPLL phase modulation sideband are introduced.

较详细介绍了分数分频锁相环的工作原理和特性，以及抑制分数分频锁相环相位调制边带的方法。

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In frequently used methods, sine wave is used as carrier with amplitude modulation (am), frequency modulation (FM) and phase modulation (PM) implied.

常用的调制方式使用正弦波作为载波并对其进行幅度调制(AM)和角度调制即调频(FM)或调相(PM)。

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In frequently used methods, sine wave is used as carrier with amplitude modulation (am), frequency modulation (FM) and phase modulation (PM) implied.

常用的调制方式使用正弦波作为载波并对其进行幅度调制(AM)和角度调制即调频(FM)或调相(PM)。

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