5 GHz voltage controlled ring oscillator using source capacitively coupled current amplifier

Author

Rui Tao ; Berroth, M.

Author_Institution

Inst. of Electr. & Opt. Commun. Eng., Stuttgart Univ., Germany

fYear

2003

fDate

11-11 April 2003

Firstpage

45

Lastpage

48

Abstract

A 5 GHz voltage controlled ring oscillator (VCO) has been designed using 0.18 /spl mu/m CMOS technology. Source Capacitively Coupled Current Amplifier (SC3A) is adopted to realize this VCO. Because of the band-pass characteristic of the SC3A, this VCO exhibits the low noise performance with a large tuning range. It can operate from 4.3 GHz up to 6.1 GHz with a phase noise of about -85 dBc/Hz at 1 MHz frequency offset. For the 2 V supply voltage, the power consumption is about 80 mW.

Keywords

CMOS analogue integrated circuits; MMIC oscillators; circuit tuning; field effect MMIC; phase noise; voltage-controlled oscillators; 0.18 micron; 2 V; 4.3 to 6.1 GHz; 5 GHz; 80 mW; CMOS; SC3A; band-pass characteristic; low noise performance; phase noise; power consumption; source capacitively coupled current amplifier; tuning range; voltage controlled ring oscillator; CMOS technology; Differential amplifiers; Equivalent circuits; Optical amplifiers; Optical fiber communication; Phase noise; Resonance; Ring oscillators; Voltage control; Voltage-controlled oscillators;

fLanguage

English

Publisher

ieee

Conference_Titel

Silicon Monolithic Integrated Circuits in RF Systems, 2003. Digest of Papers. 2003 Topical Meeting on

Conference_Location

Grainau, Germany

Print_ISBN

0-7803-7787-7

Type

conf

DOI

10.1109/SMIC.2003.1196665

Filename

1196665