Voltage controlled oscillators with ferroelectric capacitors

Author

Kabir, A. ; Jamil, Asad ; Zhang, Yulan ; Kalkur, T.S.

Author_Institution

Dept. of Electr. & Comput. Eng., Univ. of Colorado at Colorado Springs, Colorado Springs, CO

fYear

2008

fDate

19-21 May 2008

Firstpage

414

Lastpage

417

Abstract

Tunable high dielectric constant(K) based on barium strontium titanate (Ba_1-xSr_xTiO3,x=0.5) varactor was fabricated by RF magnetron sputtering. The varactors have been characterized and a circuit simulation model has been developed. This capacitor has been used as a tunable element in VCO based on Seiler architecture. The VCO has been characterized for tunability and phase noise characteristics.

Keywords

barium compounds; circuit noise; circuit simulation; circuit tuning; ferroelectric capacitors; permittivity; phase noise; sputtered coatings; strontium compounds; varactors; voltage-controlled oscillators; Ba_0.5Sr_0.5TiO₃; RF magnetron sputtering; Seiler architecture; VCO; barium strontium titanate; circuit simulation model; ferroelectric capacitors; phase noise characteristics; tunable high dielectric constant varactor fabrication; voltage controlled oscillators; Barium; Capacitors; Dielectric constant; Ferroelectric materials; Radio frequency; Strontium; Titanium compounds; Tunable circuits and devices; Varactors; Voltage-controlled oscillators; Ba1−xSrxTiO3; tunable ferroelectric capacitor; varactor; voltage-controlled oscillator (VCO);

fLanguage

English

Publisher

ieee

Conference_Titel

Frequency Control Symposium, 2008 IEEE International

Conference_Location

Honolulu, HI

ISSN

1075-6787

Print_ISBN

978-1-4244-1794-0

Electronic_ISBN

1075-6787

Type

conf

DOI

10.1109/FREQ.2008.4623030

Filename

4623030