论文部分内容阅读
本文的一、二部分描述了加法、乘法和除法的频率合成法。这里讨论的是锁相环路法的频率合成法,并对具体问题提出了三种解决办法。锁相环前面已经提到频率合成器的主要困难并不是如何产生所需要的频率,而是如何抑制不需要的频率分量。锁相环是一种选择放大性很强的电路,它最突出的优点是准确自动调谐。正是由于这一点,锁相环才广泛地用在频率合成器中。
The first and second parts of this article describe the frequency synthesis of addition, multiplication, and division. Discussed here is the phase-locked loop frequency synthesis method, and put forward three specific solutions to the problem. PLL The main difficulty that the frequency synthesizer already mentioned is not how to generate the required frequency, but how to suppress the unwanted frequency components. Phase-locked loop is a choice of very strong amplification circuit, it is the most prominent advantage of accurate automatic tuning. It is for this reason that PLLs are widely used in frequency synthesizers.