Extremely low sensitivity digital sinusoidal oscillator structure

A complex digital oscillator structure consisting of two integrators and two multipliers is proposed. The sensitivity to coefficient quantization of the proposed structure is orders of magnitude less than that of the direct-form digital oscillator. The proposed oscillator is capable of generating si...

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Bibliographic Details
Published in1996 IEEE Instrumentation and Measurement Technology Conference Proceedings Vol. 1; pp. 354 - 359 vol.1
Main Authors Al-Ibrahim, M.M., Al-Khateeb, A.M.
Format Conference Proceeding
LanguageEnglish
Published IEEE 1996
Subjects
Analytical models
Digital signal processors
Frequency
Harmonic analysis
Harmonic distortion
Oscillators
Quantization
Roundoff errors
Signal generators
Signal resolution
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ISBN0780333128
9780780333123
DOI10.1109/IMTC.1996.507406

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Summary:A complex digital oscillator structure consisting of two integrators and two multipliers is proposed. The sensitivity to coefficient quantization of the proposed structure is orders of magnitude less than that of the direct-form digital oscillator. The proposed oscillator is capable of generating sinusoidal signals in a wide range of frequencies and with high frequency resolution. The proposed oscillator structure is simple and can be implemented on already available digital signal processors. Roundoff errors and sensitivity to parameter quantization are analyzed. The simulation results obtained confirm the analysis and show that the generated sinusoids are of low harmonic distortion.
ISBN:0780333128
9780780333123
DOI:10.1109/IMTC.1996.507406