A low-phase-noise and low-power multiband CMOS voltage-controlled oscillator

Author

Li, Zhenbiao ; O, Kenneth K.

Author_Institution

Silicon Microwave Integrated Circuits & Syst. Res. Group, Univ. of Florida, Gainesville, FL, USA

Volume

40

Issue

6

fYear

2005

fDate

6/1/2005 12:00:00 AM

Firstpage

1296

Lastpage

1302

Abstract

A low voltage multiband all-pMOS VCO was fabricated in a 0.18-μm CMOS process. By using a combination of inductor and capacitor switching, four band (2.4, 2.5, 4.7, and 5 GHz) operation was realized using a single VCO. The VCO with an 1-V power supply has phase noises at 1-MHz offset from a 4.7-GHz carrier of -126 dBc/Hz and -134 dBc/Hz from a 2.4-GHz carrier. The VCO consumes 4.6 mW at 2.4 and 2.5 GHz, and 6 mW at 4.7 and 5 GHz, respectively. At 4.7 GHz, the VCO also achieves -80 dBc/Hz phase noise at 10-kHz offset with 2 mW power consumption.

Keywords

CMOS analogue integrated circuits; MMIC oscillators; UHF integrated circuits; low-power electronics; phase noise; switched capacitor networks; voltage-controlled oscillators; 0.18 micron; 1 V; 2 mW; 2.4 GHz; 2.5 GHz; 4.6 mW; 4.7 GHz; 5 GHz; 6 mW; CMOS voltage controlled oscillator; VCO; low phase noise; low-power multiband; switched capacitor; switched inductor; CMOS process; Capacitors; Degradation; Frequency; Inductors; Phase noise; Power supplies; Tuning; Voltage; Voltage-controlled oscillators; Low power; MOS; multiband; phase noise; switched capacitor; switched inductor; voltage-controlled oscillator (VCO);

fLanguage

English

Journal_Title

Solid-State Circuits, IEEE Journal of

Publisher

ieee

ISSN

0018-9200

Type

jour

DOI

10.1109/JSSC.2005.848031

Filename

1435607