基于FPGA的AD9915控制设计  

Design of AD9915 Oriented Control System Based on FPGA

作　　者：李玲霞[1] 贾帅 卢伟[1] 刘峰[1] LI Lingxia;JIA Shuai;LU Wei;LIU Feng(Chongqing University of Posts and Telecommunications,Chongqing Key Lab of Mobile Communications Technology,Chongqing 400065,China)

机构地区：[1]重庆邮电大学重庆市移动通信技术重点实验室,重庆400065

出　　处：《电子器件》2018年第2期489-494,共6页Chinese Journal of Electron Devices

基　　金：国家自然科学基金项目(61301126);重庆市基础与前沿研究计划项目(cstc2013jcyj A40032);重庆邮电大学博士启动基金(A2012-33);重庆邮电大学青年科学研究项目(A2013-31)

摘　　要：为了满足雷达对信号源的质量要求,设计了一种基于FPGA(现场可编程门阵列)+DDS(直接数字式频率合成器)的控制架构。根据AD9915的特点设计了控制系统的硬件结构,给出了FPGA的软件控制流程,并对AD9915各个控制寄存器的设置和时序进行详细说明。最后通过FPGA控制DDS芯片产生一段700 MHz到740 MHz之间的扫频信号。实验结果也证明输出波形质量和效果很好,能够满足雷达的性能需求。In order to satisfy the quality of the signal sourcein radar system,an AD9915 oriented control system was proposed based on FPGA.The hardware of the control system was designed according to the structure of AD9915.And the designed flowchart of corresponding software is well illustrated.It described the setting of each control-register and requirement of timing of AD9915 in detail.Finally,according to the generated sweep signal between 700 MHz and 740 MHz through FPGA controlled DDS chip,The result proves that the wave is high quality and good effct.It fully demonstrates that the proposed control system can meet the requirements of radar.

关 键 词：FPGA AD9915 仿真调试 控制系统 扫频信号 

分 类 号：TN929.5[电子电信—通信与信息系统]