Title :
Extremely low sensitivity digital sinusoidal oscillator structure
Author :
Al-Ibrahim, M.M. ; Al-Khateeb, A.M.
Author_Institution :
Jordan Univ. of Sci. & Technol., Irbid, Jordan
Abstract :
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
Keywords :
circuit analysis computing; digital circuits; digital simulation; error analysis; harmonic distortion; oscillators; quantisation (signal); roundoff errors; sensitivity analysis; signal processing equipment; waveform generators; coefficient quantization; digital oscillator; digital sinusoidal oscillator structure; direct-form digital oscillator; harmonic distortion; integrators; multipliers; parameter quantization; roundoff errors; sensitivity; simulation; sinusoidal signals; Analytical models; Digital signal processors; Frequency; Harmonic analysis; Harmonic distortion; Oscillators; Quantization; Roundoff errors; Signal generators; Signal resolution;
Conference_Titel :
Instrumentation and Measurement Technology Conference, 1996. IMTC-96. Conference Proceedings. Quality Measurements: The Indispensable Bridge between Theory and Reality., IEEE
Conference_Location :
Brussels
Print_ISBN :
0-7803-3312-8
DOI :
10.1109/IMTC.1996.507406
