Title :
A 900-MHz 1.5-V CMOS voltage-controlled oscillator using switched resonators with a wide tuning range
Author :
Zhenbiao Li ; O, K.
Author_Institution :
Silicon Microwave Integrated Circuits & Syst. Res. Group, Univ. of Florida, Gainesville, FL, USA
fDate :
4/1/2003 12:00:00 AM
Abstract :
A 900-MHz fully integrated VCO was fabricated in a 0.18-μm foundry CMOS process. Under 1.5 V power supply, this VCO can be tuned from 667 MHz to 1156 MHz which corresponds to a 53.6% tuning range. The VCO has nearly constant phase noise over the whole tuning frequency, credit to the switched resonators used in this VCO. The phase noise at a 600 kHz offset is -123.1 dBc/Hz at 1125 MHz center frequency and -124.2 dBc/Hz at 667 MHz center frequency.
Keywords :
CMOS analogue integrated circuits; MMIC oscillators; UHF integrated circuits; UHF oscillators; circuit tuning; low-power electronics; phase noise; switched networks; transceivers; voltage-controlled oscillators; 0.18 micron; 1.5 V; 667 to 1156 MHz; 900 MHz; CMOS; constant phase noise; switched resonators; transceiver; tuning range; voltage-controlled oscillator; CMOS process; Capacitance; Foundries; Frequency; Inductance; Phase noise; Power supplies; Tuning; Voltage; Voltage-controlled oscillators;
Journal_Title :
Microwave and Wireless Components Letters, IEEE
DOI :
10.1109/LMWC.2003.811054
