Title :
A 2.2-mW Backgate Coupled LC Quadrature VCO With Current Reused Structure
Author :
Hong, Jong-Phil ; Yun, Seok-Ju ; Oh, Nam-Jin ; Lee, Sang-Gug
Author_Institution :
Inf. & Commun. Univ., Daejeon
fDate :
4/1/2007 12:00:00 AM
Abstract :
This letter presents a backgate coupled quadrature voltage-controlled oscillator (QVCO) which consists of a pair of current reused LC-VCOs. The proposed QVCO is designed for 2-GHz operation based on a 0.18-mum triple-well CMOS technology. Measurements show -102 and -124dBc/Hz at 100-kHz and 1-MHz offset, respectively. Compared to the conventional QVCO, the proposed QVCO dissipates significantly lower power (1.74mA from a 1.25-V supply) while showing good 1/f3 close-in phase noise
Keywords :
1/f noise; CMOS integrated circuits; UHF integrated circuits; UHF oscillators; phase noise; voltage-controlled oscillators; 0.18 micron; 1.25 V; 1.74 mA; 2 GHz; 2.2 mW; backgate coupled LC quadrature VCO; current reused structure; phase noise; quadrature voltage-controlled oscillator; triple-well CMOS technology; CMOS technology; Coupling circuits; Degradation; Flip-flops; Phase noise; Power dissipation; Radio frequency; Signal generators; Transconductance; Voltage-controlled oscillators; CMOS; low power; quadrature voltage-controlled oscillator (QVCO); radio frequency (RF);
Journal_Title :
Microwave and Wireless Components Letters, IEEE
DOI :
10.1109/LMWC.2007.892988
