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

Volume

17

Issue

4

fYear

2007

fDate

4/1/2007 12:00:00 AM

Firstpage

298

Lastpage

300

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);

fLanguage

English

Journal_Title

Microwave and Wireless Components Letters, IEEE

Publisher

ieee

ISSN

1531-1309

Type

jour

DOI

10.1109/LMWC.2007.892988

Filename

4141077