基于FPGA与DDS技术的通用调制平台的研究  

The Research on general modulation platform based on FPGA and DDS

作　　者：余晶晶[1] 陶成[1] 贾怀义[1] 

机构地区：[1]北京交通大学电子信息工程学院,北京100044

出　　处：《电测与仪表》2007年第5期47-50,共4页Electrical Measurement & Instrumentation

基　　金：国家自然科学基金资助项目(60474043)

摘　　要：本文基于DDS专用芯片AD9853研究和设计了一种由FPGA控制的,可提供FSK/QPSK/DQPSK/16QAM/16DQAM五种调制方式,输出频率在5～65MHz范围内功率可调的通用调制平台,并具有液晶显示与键盘输入功能。此平台不仅可以保证信号的质量和灵活地调制方式,而且可以方便地进行系统功能的扩展和网络连接,广泛应用于多种通信领域。In order to ensure the communication quality under various circumstances, communication systems usually need several kinds of modulation. A general modulation platform, with modulation variable, frequency variable and high stability, would meet these requirements. Therefore, based on the AD9853, the DDS chip, a general modulation platform is built. The platform is controlled by FPGA with the output frequency between 5～65MHz, and could provide five modes of modulation, including FSK,QPSK,DQPSK,16QAM and 16DQAM, as well as the LCD and keyboard-inputting function. The system would not only ensure the communication quality and modulation flexibility, but also be easy to extend extra functions, and can be widely applied in many fields of communication.

关 键 词：数字调制 DDS AD9853 FPGA 

分 类 号：TP346[自动化与计算机技术—计算机系统结构]