DDS Signal Generator Based on FPGA
A DDS (Direct Digital Synthesis) Signal Generator based on FPGA is a high-speed and flexible method for generating accurate waveforms such as sine, square, triangle, or arbitrary signals. Using an FPGA for DDS provides precise frequency control, phase resolution, and the ability to generate complex modulations or custom waveforms in real time. Key Concepts of DDS in FPGA 1. Basic DDS Architecture The core components of a DDS generator include: mathematica ┌────────────┐ ┌────────────┐ ┌────────────┐ │ Phase │ │ Waveform │ │ DAC or │ │ Accumulato │──▶│ Lookup │──▶│ PWM/Output │ │ (Adder) │ │ Table (ROM) │ │ Stage │ └────────────┘ └────────────┘ └────────────┘ 2. Components Explained Phase Accumulator : Adds a fixed phase increment to its value on each clock cycle. T...