基于全IP核和参数化的大带宽线性调频信号源设计  

Design of Wide Bandwidth LFM Signal Source based on Full IP Core and Parameterization

作　　者：万子平 马丽莎[3] 

机构地区：[1]长沙机电产品研究开发中心,湖南长沙410100 [2]国防科学技术大学,湖南长沙410073 [3]上海工程技术大学,上海201620

出　　处：《通信技术》2017年第11期2617-2625,共9页Communications Technology

摘　　要：针对DDS产生线性调频信号时的灵活性差和最高频率上限低的问题,基于全IP核和参数化的大带宽线性调频信号源,在设计时采用基于单斜率字输入的并行DDS结构。该结构在对DDS相位增量和相位偏置进行参数提取的基础上,采用了加法器、乘法器、累加器、直接数字频率合成器和多路选择器的全IP核模块化设计方法。最后,在对该结构进行板级仿真的基础上,对频带为0.75 GHz到1.15 GHz的线性调频信号产生进行了实现。Aiming at the poor flexibility and low maximum-frequency limit during the production of LFM signals by DDs, and based on full IP core and parameterized large bandwidth LFM signal source, the parallel DDS architecture based on single slope word input is adopted in the design. With the extraction of DDS phase increment and phase offset parameters, adder, multiplier, accumulator, direct digital frequency synthesizer and multiplexer IP kernel module are employed in design of the structure, Finally, based on board level simulation of the structure, the generation of LFM signal with frequency band of 0.75 GHz to 1.15 GHz is realized.

关 键 词：线性调频信号 全IP核 参数化 大带宽 

分 类 号：TN98[电子电信—信息与通信工程]