Title :
Nonlinear behavioral modeling and phase noise evaluation in phase locked loops
Author :
De Smedt, Bart ; Gielen, Georges
Author_Institution :
ESAT-MICAS, Heverlee, Belgium
Abstract :
In this paper, a method is proposed for evaluating the phase noise spectrum of phase locked loops. Reliable loop simulations are based on a highly-accurate behavioral model for the voltage controlled oscillator. A verification is performed between the output spectrum of the VCO model and the transistor-level VCO spectrum as a function of the applied input voltage. This yields an accuracy better than 0.25 dBc/Hz. The phase noise spectrum of a phase locked loop is calculated. Simulation results are presented and compared with measurements
Keywords :
circuit simulation; phase locked loops; phase noise; voltage-controlled oscillators; VCO model; applied input voltage; loop simulation; nonlinear behavioral modeling; output spectrum; phase locked loops; phase noise evaluation; transistor-level VCO spectrum; voltage controlled oscillator; Noise measurement; Phase detection; Phase frequency detector; Phase locked loops; Phase measurement; Phase noise; Pollution measurement; Semiconductor device modeling; Space exploration; Voltage-controlled oscillators;
Conference_Titel :
Custom Integrated Circuits Conference, 1998. Proceedings of the IEEE 1998
Conference_Location :
Santa Clara, CA
Print_ISBN :
0-7803-4292-5
DOI :
10.1109/CICC.1998.694906