Title :
A 2.4-GHz CMOS monolithic VCO based on an MOS varactor
Author :
Andreani, Pietro ; Mattisson, Sven
Author_Institution :
Dept. of Appl. Electron., Lund Univ., Sweden
Abstract :
A 2.4-GHz CMOS VCO is presented employing pMOS transistors as voltage-controlled capacitances and on-chip hollow spiral inductors. The design was implemented in a standard digital 0.8 μm CMOS process and exhibits a 15% tuning range at 2.5 V supply voltage and 9 mA supply current. Phase-noise measurements show a phase-noise of about -118 dBc/Hz at 1 MHz from the carrier
Keywords :
CMOS analogue integrated circuits; UHF integrated circuits; UHF oscillators; circuit tuning; integrated circuit design; integrated circuit noise; phase noise; varactors; voltage-controlled oscillators; 0.8 micron; 2.4 GHz; 2.5 V; 9 mA; CMOS monolithic VCO; MOS varactor; onchip hollow spiral inductors; pMOS transistors; phase noise; tuning range; voltage-controlled capacitances; CMOS process; Capacitance; Current supplies; Inductors; MOSFETs; Phase measurement; Spirals; Varactors; Voltage; Voltage-controlled oscillators;
Conference_Titel :
Circuits and Systems, 1999. ISCAS '99. Proceedings of the 1999 IEEE International Symposium on
Conference_Location :
Orlando, FL
Print_ISBN :
0-7803-5471-0
DOI :
10.1109/ISCAS.1999.780813
