Title :
A 1.8-GHz low-phase-noise spiral-LC CMOS VCO
Author :
Craninckx, J. ; Steyaert, M.
Author_Institution :
Katholieke Univ., Leuven, Belgium
Abstract :
A completely integrated 1.8-GHz low-phase-noise voltage-controlled oscillator is presented. The design relies heavily on the integrated spiral inductors, which are constructed with only two metal layers and without etching. The effects of eddy currents and losses in the heavily doped substrate have been simulated and modeled with finite-element analyses. The achieved phase noise is as low as -116 dBc/Hz at 600 kHz offset, at a power consumption of only 6 mW. The VCO´s tuning range is 250 MHz.
Keywords :
CMOS analogue integrated circuits; UHF integrated circuits; UHF oscillators; circuit tuning; eddy currents; finite element analysis; inductors; integrated circuit noise; losses; phase noise; voltage-controlled oscillators; 1.8 GHz; 6 mW; FEM; UHF IC; eddy currents; finite-element analyses; heavily doped substrate; integrated spiral inductors; losses; low-phase-noise VCO; spiral-LC CMOS VCO; tuning range; Analytical models; Eddy currents; Energy consumption; Etching; Finite element methods; Inductors; Phase noise; Semiconductor device modeling; Spirals; Voltage-controlled oscillators;
Conference_Titel :
VLSI Circuits, 1996. Digest of Technical Papers., 1996 Symposium on
Conference_Location :
Honolulu, HI, USA
Print_ISBN :
0-7803-3339-X
DOI :
10.1109/VLSIC.1996.507704
