一种可调占空比型双模分频器设计及精度分析

介绍基于FPGA可编程单元设计的一种占空比在整数范围内可调、分频比最小单位为0.1的可控分频器的设计,并对该分频器的精度进行了分析,提出了一种能大幅度提高小数分频精度的改进型双模小数分频法——整数/半整数转换双模小数分频法。设计在通过仿真、综合、后仿真后,在Xilinx FPGA上实现。

Design and precision analysis of dual-modules frequency divider with ulable duty ratio

This paper describes a dual-modules frequency divider with regulable duty ratio based on FPGA,whose least significant bit of the frequency is 0.1.A novel method of the decimal frequency division,the Integer/Half-integer dual-modules decimal frequency division,which can greatly improve the precision of the decimal frequency divider,is proposed through the precision of the frequency divider.After simulation,synthesis and post-simulation,the design is implemented on the Xilinx FPGA.