Fundamental Principles of DDS Direct Digital Synthesis with VHDL Implementation and MATLAB Verification
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This article provides a comprehensive explanation of the fundamental principles of DDS (Direct Digital Synthesis), including its working mechanism and related theoretical concepts. The implementation involves writing core DDS source code using VHDL hardware description language, featuring key components such as phase accumulator, phase-to-amplitude converter, and sine lookup table. The design is simulated on the ISE development platform to verify the digital logic functionality. Additionally, MATLAB is utilized for signal analysis and validation of the sine wave output characteristics, ensuring accuracy and reliability through frequency domain analysis and waveform comparison. Through this detailed presentation, readers will gain deeper understanding of DDS fundamentals while learning practical implementation techniques for VHDL coding, simulation methodologies, and MATLAB-based verification approaches for digital signal generation systems.
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