Varactor diodeless harmonic VCOs for GHz-range applications

Author

Stadius, Kuri ; Kaumisto, R. ; Porra, Veikko

Author_Institution

Electron. Circuit Design Lab., Helsinki Univ. of Technol., Espoo, Finland

Volume

1

fYear

1999

fDate

1999

Firstpage

505

Abstract

Two methods for extending the tuning range of monolithic LC-oscillators are discussed in this paper. The first approach is to use actively synthesized capacitor based on the Miller effect instead of a p-n junction varactor diode for the VCO tuning. In the second approach we use a balanced variable impedance converter for the same purpose. In this approach tuning is based on current steering. All together eight experimental circuits have been designed with a 0.8 μm BiCMOS process parameters

Keywords

BiCMOS analogue integrated circuits; MMIC oscillators; UHF integrated circuits; UHF oscillators; circuit tuning; harmonic oscillators (circuits); voltage-controlled oscillators; 0.8 micron; BiCMOS process parameters; GHz-range applications; Miller effect; VCO tuning; actively synthesized capacitor; balanced variable impedance converter; current steering; harmonic VCO; monolithic LC oscillators; tuning range; varactor diodeless VCO; varactorless VCO; Capacitance; Capacitors; Circuit optimization; Diodes; Frequency; Impedance; Phase noise; Tuning; Varactors; Voltage-controlled oscillators;

fLanguage

English

Publisher

ieee

Conference_Titel

Electronics, Circuits and Systems, 1999. Proceedings of ICECS '99. The 6th IEEE International Conference on

Conference_Location

Pafos

Print_ISBN

0-7803-5682-9

Type

conf

DOI

10.1109/ICECS.1999.812333

Filename

812333