| 基于FPGA的数控振荡器的设计与实现 |
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| 引用本文： | 张进,苏凯雄.基于FPGA的数控振荡器的设计与实现[J].福州大学学报(自然科学版),2005,33(5):584-587. |
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| 作者姓名： | 张进 苏凯雄 |
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| 作者单位： | 福州大学电子技术研究所,福建,福州,350002 |
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| 摘 要： | 介绍一种利用矢量旋转的CORDIC(COordination Rotation DIgital Computer)算法实现正交数字混频器中的数控振荡器(NCO)的方法.推导了CORDIC算法产生正余弦信号的实现过程,给出了在FPGA中设计数控振荡器的顶层电路结构,并根据算法特点在设计中引入流水线结构设计.
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| 关 键 词： | 软件无线电 数控振荡器 CORDIC算法 现场可编程门阵列 |
| 文章编号： | 1000-2243(2005)05-0584-04 |
| 修稿时间： | 2004年12月9日 |
Design and realization of numeric controlled oscillator based on FPGA |
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| ZHANG Jin,SU Kai-xiong.Design and realization of numeric controlled oscillator based on FPGA[J].Journal of Fuzhou University(Natural Science Edition),2005,33(5):584-587. |
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| Authors: | ZHANG Jin SU Kai-xiong |
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| Institution: | (Electronic Technology Institute of Fuzhou University,Fuzhou,Fujian 350002,China) |
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| Abstract: | This paper introduces a method of realization of the numeric controlled oscillator(NCO) used in quadrature digital mixer with the CORDIC(COordination Rotation DIgital Computer) algorithm based on vector rotation. Firstly,the principle of producing sine and cosine signal with CORDIC algorithms is given.And then a top-layer circuits structure of NCO in FPGA is presented.Finaly,a pipeline design is introduced according to the characteristic of the algorithm. |
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| Keywords: | software radio numeric controlled oscillator CORDIC algorithm FPGA |
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