Title :
Analysis and design of a dual band reconfigurable VCO
Author :
Mazzanti, A. ; Uggetti, P. ; Battagia, R. ; Svelto, F.
Author_Institution :
Modena Univ., Italy
Abstract :
A systematic approach to the design of reconfigurable LC VCOs is proposed in this paper. The focus is on the choice of the reactive element of the tank most suited to switch the oscillation frequency. The optimum is the component that determines the tank Q. As an example, the design of a GSM900/1800 VCO in a 0.13 μm CMOS technology, switching a series inductor, is discussed. At this frequency, the tank Q is roughly the inductor Q, and series inductor switching allows area savings with respect to parallel switching.
Keywords :
CMOS analogue integrated circuits; UHF oscillators; inductors; reconfigurable architectures; 0.13 micron; 1.8 GHz; 900 MHz; CMOS; GSM900/1800 VCO; LC VCO; dual band reconfigurable VCO; oscillation frequency switching; series inductor switching; tank Q-factor; tank reactive element; CMOS technology; Dual band; Energy consumption; Frequency; Inductors; MOS devices; Phase noise; Switches; Tuning; Voltage-controlled oscillators;
Conference_Titel :
Electronics, Circuits and Systems, 2004. ICECS 2004. Proceedings of the 2004 11th IEEE International Conference on
Print_ISBN :
0-7803-8715-5
DOI :
10.1109/ICECS.2004.1399608
