摘要
为了实现可调频信号源的设计,提出了一种基于CORDIC算法的DDS调频信号源的设计方案,本中首先介绍了DDS的工作原理,同时对基于CORDIC算法的相幅变换方法进行了详细叙述,利用计算正弦值的CORDIC算法在FPGA上设计数字调频波信号源,可输出高精度数字调频信号,最后对整体模块进行了仿真和实验,输出中心频率23.5 MHz,带宽1.5 MHz的调频信号,验证了文中提出的方案可行,并且结构简单易于实现。
In order to satisfy the design of FM signal source, the design of DDS FM signal source system based on CORDIC algorithm is presented in this paper. This paper introduced the direct digital synthesis （DDS） technology, while described the methods of amplitude and phase transformation based on the CORDIC algorithm in detail, The system used the CORDIC algorithm to design digital FM signal source in FPGA .It can output high-precision digital FM signals. Finally completed the simulation and experiments of overall module .The output center frequency is 23.5 MHz, and bandwidth is 1.5 MHz. It verify the proposed scheme is feasible, and the structure is simple and easy to implement.
出处
《电子设计工程》
2014年第16期132-134,共3页
Electronic Design Engineering
