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Digital architecture for a piecewise-linear arbitrary-waveform generator

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Abstract

In this paper a digital architecture for generating piecewise-linear arbitrary waveforms is presented. The proposed design is able to generate a piecewise-linear periodic signal by only using a minimum number of input data (breakpoints). The generator circuit implements a hybrid scheme which takes advantage of two methods: the purely piecewise-linear interpolation and the lookup-table structure. From the piecewise-linear method exploits the characteristic of a reduced memory requirement as well as the capability of automatically construct a waveform by repetitive (iterative) function evaluations. From lookup-table makes use of the simplicity in hardware implementation and the higher processing speed. In order to verify the performance of this proposal, three piecewise-linear waveforms have been successfully implemented in a ATMEGA32 microcontroller. Experimental results show a fast execution speed and a reduced memory demand in the proposed circuit realization.

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Acknowledgment

We gratefully acknowledge the financial support of the National Council for Science and Technology of Mexico (CONACyT) through grant CB-2010-01 no.157024.

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Authors and Affiliations

  1. Facultad de Instrumentación Electrónica y Ciencias Atmosféricas, Universidad Veracruzana, Circuito Gonzalo Aguirre Beltrán s/n, Zona Universitaria, CP 91000, Xalapa, Veracruz, Mexico

    Victor M Jimenez-Fernandez, Hector Vazquez-Leal, Pablo S Luna-Lozano, J L Vazquez-Beltran, G Garcia-Santiago & E Valdes-Ortega

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  1. Victor M Jimenez-Fernandez
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  2. Hector Vazquez-Leal
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  3. Pablo S Luna-Lozano
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  4. J L Vazquez-Beltran
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  5. G Garcia-Santiago
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  6. E Valdes-Ortega
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Correspondence to Victor M Jimenez-Fernandez.

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Jimenez-Fernandez, V.M., Vazquez-Leal, H., Luna-Lozano, P.S. et al. Digital architecture for a piecewise-linear arbitrary-waveform generator. Sādhanā 41, 847–853 (2016). https://doi.org/10.1007/s12046-016-0527-2

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  • DOI: https://doi.org/10.1007/s12046-016-0527-2

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