基于FPGA的频率计电路设计

本文介绍了数字频率计设计的基本原理，对频率计所采用各种硬件除法进行了比较，提出了倍频计数法测量数字高频的实现方案，并给出了频率计设计的硬件电路原理和软件实现，结果表明这种方法实现了频率计的高速和高精度。

Design of Circuit in Frequency Counter Bases on FPGA

This thesis introduced the basic principle of design digital frequency counter, compared various methods of hardware division that the frequency counter adopted, proposed the realization plan to mea- sure digital high frequency by the use of multiple frequency counting method,and gave the circuit principle and soft realization of design the frequency counter. The results indicate that this method realized high-speed and high-accuracy frequency counter.