Title :
Analysis and design of numerically controlled oscillators based on linear time-variant systems
Author_Institution :
Nat. Res. Center for Inf. Technol., St. Augustin, Germany
Abstract :
It is shown that numerically controlled oscillators (NCO) can be modeled using a linear periodically time-variant system. This new description allows a complete analysis and a generalization of NCO. An example demonstrates that a generalized NCO can efficiently achieve high spectral purity
Keywords :
direct digital synthesis; discrete time systems; interpolation; linear systems; nonlinear network analysis; nonlinear network synthesis; numerical control; oscillators; time-varying systems; NCO analysis; direct digital frequency synthesizer; discrete time systems; high spectral purity; linear interpolation; linear periodically time-variant system; numerically controlled oscillators; oscillator design; Cognition; Control systems; Error analysis; Frequency synthesizers; Information technology; Oscillators; Signal analysis; Signal design; Signal generators; Signal resolution;
Conference_Titel :
Time-Frequency and Time-Scale Analysis, 1998. Proceedings of the IEEE-SP International Symposium on
Conference_Location :
Pittsburgh, PA
Print_ISBN :
0-7803-5073-1
DOI :
10.1109/TFSA.1998.721459
