The work presents the frequency synthesizer based on PLLs. 所以在频率合成器的设计，可分为两个主题。
A new advanced method to constitute a multiple point frequency synthesizer by using large scale PLL frequency IC controlled by single chipmicrocomputer is presented. 用单片机控制大规模集成锁相环频率合成电路来构成多频点频率合成器，使大规模集成锁相环频率合成电路的功能得到充分发挥。
