›› 2011, Vol. 24 ›› Issue (1): 28-.

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  1. (西安电子科技大学 电子工程学院,陕西 西安 710071)
  • 出版日期:2011-01-15 发布日期:2010-12-30
  • 作者简介:王威(1986-),男,硕士研究生。研究方向:电路与系统。

The Implementation of High Precision Sine and Cosine Functions on FPGA

 WANG Wei   

  1. (School of Electronic Engineering,Xidian University,Xi'an 710071,China)
  • Online:2011-01-15 Published:2010-12-30


在研究CORDIC算法的数学基础上,采用流水线的硬件结构实现了该算法,并在Altera公司的FPGA芯片上进行了验证,使正余弦函数的计算达到了实时性、高精度的要求。该设计模块完全支持超过360°的大角度数据输入,多数数据精度达到了10-9,时钟频率可以达到233.2 MHz。测试结果表明,该系统具有较高的精确度和稳定性。

关键词: CORDIC, 流水线, FPGA


Based on the study of the CORDIC algorithm,this paper uses pipeline processing to implement the CORDIC in hardware,which meets the requirement of real-time processing and high precision.Software simulation and hardware experiment have been done for this module on Altera FPGA.The wide angle even above 360° can also be supported by the hardware module.The accuracy of most of the data is up to 10-9,and the clock frequency reaches 233.2 MHz.The results show that the module has high accuracy and good stability.

Key words: CORDIC;pipeline;FPGA


  • TN306.6