FPGA-based design, implementation, and evaluation of digital sinusoidal generators

Herrero, Miguel A.; Rodríguez-Andina, Juan J.; Fariña, José

doi:10.1109/iecon.2008.4758342

Cited by 2 publications

(1 citation statement)

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“…Its principle is to vary the frequency of the clock, which is used to read the pre-calculated waveform amplitude data digitally stored in a memory. Then, the data which have been read is converted to become the analog signal [6]- [8].…”

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confidence: 99%

Improve performance of the digital sinusoidal generator in FPGA by memory usage optimization

Jidin¹,

Mahzan²,

Subki³

et al. 2019

IJECE

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<p>This paper presented the improvement in the performance of the digital sinusoidal signal generator, which was implemented in FPGA, by optimizing the usage of the available memory onboard. The sine wave was generated by using a Lookup Table method, where its pre-calculated values were stored in the onboard memory, and its frequency can be adjustable by changing the incremental step value of the memory address. In this proposed research, the memory stores only 25000 samples of the first quarter from a period of a sine wave and thus, the output signal accuracy was increased and the output frequency range was expanded, compared to the previous research. The proposed design was successfully developed and implemented in ALTERA Cyclone III DE0 FPGA Development Board, and its functionality was validated via functional simulation in Modelsim and also hardware experimental results observation in SignalTap II.</p>

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confidence: 99%