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提出了一种新的频率合成方法。该方法的基本思想是,按照一种特定算法,对于每一个所需的输出频率,对数字锁相环的可程控反馈分频器设置一组不同的分频系数,以使环路鉴相器输出端干扰的频率与频率分辨率相互独立,从而便可同时获得高的频率分辨率和较大的环路带宽。
A new frequency synthesis method is proposed. The basic idea of this method is to set a set of different division factors for the programmable feedback divider of the digital phase locked loop for each desired output frequency according to a particular algorithm so that the loop phase detector The frequency and frequency resolution of the output interfere with each other independently so that both high frequency resolution and large loop bandwidth can be obtained simultaneously.