Abstract: In this paper, the direct digital frequency synthesizer (DDS) specifications were improved by increasing the number of accumulator bits, increasing the memory capacity of the generated signal samples, using a DAC by increasing the number of its bits, as well as generating different types of analogue signals in a digital way.
In this paper also, we discuss a practical mechanism of a digital function signals generator (DFSG) based on a direct digital frequency synthesizer (DDFS) using Cyclone II EP2C20F484C7 FPGA from ALTERA placed on education and development board DE-1 with the following parameters:
-Output waveforms: Sin, Gaussian, Sinc, Square , Saw tooth ,Triangular, and Wight Noise Signals.
-Frequency range: (3Hz…..10000 KHz ).
-Frequency Resolution (3Hz).
-Signal amplitude (5V).
-With Reset the generator.
-Frequency of the generated signal for all types (1MHz).
Keywords: DFGS, DDFS , FPGA, DPNG , SIN, SINC ,SQUARE, SAWTOOTH, GAUSSIAN, TRIANGULAR .
|
DOI:
10.17148/IJARCCE.2024.13503
