Title :
Highly accurate digital sinusoidal oscillators using controlled rounding
Author :
Miyata, Masachika
Author_Institution :
Kanazawa Inst. of Technol., Ishikawa, Japan
Abstract :
The author proposes a novel type of digital oscillator and analyzes its properties using complex phasors. Bounds of amplitude deviation and phase jitter are discussed theoretically and confirmed by simulation. As an example, it is shown that both relative amplitude deviation and phase jitter in radians can be within 0.0005 for an initial amplitude of 10.000. A time-varying coefficient oscillator is also discussed in connection with application to a sweep oscillator or a digital frequency modulator
Keywords :
frequency modulation; oscillators; amplitude deviation bounds; complex phasors; controlled rounding; digital frequency modulator; digital sinusoidal oscillators; fixed frequency oscillators; phase jitter bounds; sweep oscillator; swept frequency oscillators; time-varying coefficient oscillator; Digital filters; Digital modulation; Digital signal processing; Feedback loop; Frequency modulation; Jitter; Noise reduction; Oscillators; Quantization; Signal sampling;
Conference_Titel :
Circuits and Systems, 1988., IEEE International Symposium on
Conference_Location :
Espoo
DOI :
10.1109/ISCAS.1988.15384
