The Design of Signal Generator Based on FPGA High Resolution

Chun Yan He; Bing Qi Liu; Ming Zhe Liu; Xiao Bo Mao

doi:10.4028/www.scientific.net/AMM.713-715.970

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 713-715The Design of Signal Generator Based on FPGA High...

The Design of Signal Generator Based on FPGA High Resolution

Abstract:

In view of the digital geophone self-test system application demand for a variety of high quality waveform signal. This paper introduces a kind of design method of direct digital synthesis waveform signal generator based on FPGA. It mainly discusses the principle of the method of frequency synthesis technology, design thinking and implementation method. And using the design method of pipeline structure to improve circuit structure of 48 bits phase accumulator, so as to improve the running speed, and further increase the resolution of frequency synthesis. The test shows that the signal generator can produce sine wave, square wave, sawtooth wave, triangle wave. The frequency resolution can reach 0.18μHz. The highest output frequency is up to 20MHz, and frequency switch time is 20ns.

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Periodical:

Applied Mechanics and Materials (Volumes 713-715)

Pages:

970-974

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.713-715.970

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Online since:

January 2015

Authors:

Chun Yan He*, Bing Qi Liu, Ming Zhe Liu, Xiao Bo Mao

Keywords:

Digital Geophone, Direct Digital Synthesis (DDS), FPFA, Phase Accumulator

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* - Corresponding Author

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