The essential blocks of the synthesizer, the prescaler, the phase detector, the chargepump, and the voltagecontrolled oscillator were presented.

提出了合成的基本模块，包括预分频，鉴相，泵和压控振荡。

A new type of digital phasometer applied to the infrared laser position-tracking system of mine hoister is introduced in the paper,which is based on FPGA and FFT algorithm.

主要介了在矿井提升机红外激跟踪系统中一种新型数字鉴相的研究方法,该方法是基于FPGA件运用FFT算法完成的。