Title :
VCO phase noise and sideband spurs due to substrate noise generated by on-chip digital circuits
Author :
Méndez, M.A. ; Osorio, J.F. ; Mateo, D. ; Aragonés, X. ; González, J.L.
Author_Institution :
Dept. of Electron. Eng., Univ. Politecnica de Catalunya, Barcelona
Abstract :
This paper presents the effects of noise generated by realistic digital circuits on RF voltage controlled oscillators (VCO) integrated in the same silicon die. The digital noise is coupled through the common substrate and generates both phase noise and sideband spurs at the VCO output. The noise coupling and impact mechanisms, and their dependence on the VCO operating conditions (control voltage, gain and bias current) are investigated
Keywords :
elemental semiconductors; integrated circuit noise; phase noise; radiofrequency integrated circuits; voltage-controlled oscillators; RF voltage controlled oscillators; VCO phase noise; digital noise; on-chip digital circuits; sideband spurs; silicon die; substrate noise; Circuit noise; Circuit testing; Coupling circuits; Degradation; Digital circuits; Noise generators; Phase noise; Radio frequency; Voltage control; Voltage-controlled oscillators;
Conference_Titel :
Radio Frequency Integrated Circuits (RFIC) Symposium, 2006 IEEE
Conference_Location :
San Francisco, CA
Print_ISBN :
0-7803-9572-7
DOI :
10.1109/RFIC.2006.1651101
