Research on the DDS' CPLD Control to Generate Special Band Signal

Direct digital frequency synthesis (DDS) in often used in RF(Radio Frequency) systems, such as MRI(Magnetic Resource Imaging). This paper describes a DDS chip AD9854 's structure and its essential program by a CPLD chip XCldrldrldrldrldrXLldrldrR gives us material internal structure and how to...

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Bibliographic Details
Main Authors: Shi Yu Yan, Ji Zhou Li
Format: Conference Proceeding
Language:English
Subjects:
Binary phase shift keying
Biomedical engineering
Capacitance
Filters
Frequency shift keying
Frequency synthesizers
Radio control
Radio frequency
Read only memory
Signal generators
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Summary:Direct digital frequency synthesis (DDS) in often used in RF(Radio Frequency) systems, such as MRI(Magnetic Resource Imaging). This paper describes a DDS chip AD9854 's structure and its essential program by a CPLD chip XCldrldrldrldrldrXLldrldrR gives us material internal structure and how to program AD9854, and how to generate a radio frequency by AD9854 with CPLD's control. The program code is written in VHDL, and all codes are simmulated through ModelSim SE 5.6d. At last, the paper gives conclusion that using CPLD control DDS chip to generate radio frequency is absolutely feasible.
ISSN:1948-2914
1948-2922
DOI:10.1109/BMEI.2008.152