Title :
An LC-VCO with one octave tuning range
Author :
Kämpe, Andreas ; Olsson, Håkan
Author_Institution :
Radio Electron.-LECS/IMIT, R. Inst. of Technol., Stockholm, Sweden
fDate :
28 Aug.-2 Sept. 2005
Abstract :
This paper presents a fully integrated low power and low phase-noise VCO, having a tuning range over one octave (1.2 GHz to 2.5 GHz). The architecture is fully differential and the differential tuning offers a common-mode rejection of 31 dB. The VCO is implemented in a 0.18μm CMOS process using a 1.8 V supply. The circuit, including the bias, consumes only 11.6 mW at 1.2 GHz oscillation frequency, the phase-noise is -129 dBc/Hz at 1 MHz frequency offset.
Keywords :
CMOS analogue integrated circuits; UHF oscillators; circuit tuning; low-power electronics; phase noise; voltage-controlled oscillators; 0.18 micron; 1 MHz; 1.2 GHz; 1.2 to 2.5 GHz; 1.8 V; 11.6 mW; CMOS process; LC voltage controlled oscillators; differential tuning; low phase-noise VCO; low power VCO; CMOS process; Capacitors; Circuit optimization; Energy consumption; Frequency synthesizers; Low-frequency noise; Phase noise; Tuning; Varactors; Voltage-controlled oscillators;
Conference_Titel :
Circuit Theory and Design, 2005. Proceedings of the 2005 European Conference on
Print_ISBN :
0-7803-9066-0
DOI :
10.1109/ECCTD.2005.1523125
