A process compensation technique for integrated VCO

Author

Ang, Karen Chai Moy ; Chia, Michael Yan Wah ; Li, David Po Ming

Author_Institution

Inst. for Infocomm Res., Singapore, Singapore

fYear

2004

fDate

6-8 June 2004

Firstpage

591

Lastpage

594

Abstract

A 2.576 GHz low phase-noise integrated VCO is presented, featuring a technique to compensate frequency drifts arising from process variation in PN varactors. PN varactors are used to achieve 10% tuning range, while MOS varactors are digitally switched to compensate for capacitance variations in the PN varactors. The designed VCO yields phase-noise as low as -98dBc/Hz at 100 kHz offset and guarantees 141 MHz of tuning range in the presence of manufacturing inaccuracies.

Keywords

BiCMOS integrated circuits; UHF integrated circuits; UHF oscillators; circuit tuning; phase noise; varactors; voltage-controlled oscillators; 141 MHz; 2.576 GHz; BiCMOS technology; PN varactor frequency drift; VCO process compensation technique; digitally switched MOS varactors; integrated LC VCO; low phase-noise VCO; process monitoring; process variation; tuning range; varactor capacitance variations; Capacitance-voltage characteristics; Circuit optimization; Frequency; Monitoring; Parasitic capacitance; Phase noise; Tuning; Varactors; Voltage; Voltage-controlled oscillators;

fLanguage

English

Publisher

ieee

Conference_Titel

Radio Frequency Integrated Circuits (RFIC) Symposium, 2004. Digest of Papers. 2004 IEEE

ISSN

1529-2517

Print_ISBN

0-7803-8333-8

Type

conf

DOI

10.1109/RFIC.2004.1320690

Filename

1320690