Title :
High Frequency LC-VCO Design with Flicker Noise Reduction in 0.13 μm CMOS
Author :
Chiu, James ; Plett, Calvin
Author_Institution :
Dept. of Electron., Carleton Univ., Ottawa, Ont.
Abstract :
In this paper, high frequency LC-VCOs are designed in 0.13 μm CMOS with the purpose of phase noise reduction. Differential designs and the use of differential varactor structures are presented. A mechanism is proposed for a varactor structure that significantly reduces flicker noise from being translated into phase noise. Simulations with this varactor structure show an improvement of 15 dB at a 1 kHz offset at 21 GHz for a VCO with differential tuning, and an improvement of 15 dB at 1 kHz offset at 5 GHz for a VCO with single-ended tuning
Keywords :
CMOS analogue integrated circuits; circuit tuning; flicker noise; phase noise; varactors; voltage-controlled oscillators; 0.13 micron; CMOS technology; LC-VCO; differential tuning; differential varactor structures; flicker noise reduction; single-ended tuning; voltage-controlled oscillator; 1f noise; CMOS technology; Circuit noise; Diodes; Frequency; Low-frequency noise; Phase noise; Varactors; Voltage; Voltage-controlled oscillators;
Conference_Titel :
Circuits and Systems, 2006 IEEE North-East Workshop on
Conference_Location :
Gatineau, Que.
Print_ISBN :
1-4244-0416-9
Electronic_ISBN :
1-4244-0417-7
DOI :
10.1109/NEWCAS.2006.250952
