A voltage controlled oscillator using Barium Strontium Titanate (BST) thin film varactor

  • Alan Victor
  • , Jayesh Nath
  • , Dipankar Ghosh
  • , Brian Boyette
  • , Jon Paul Maria
  • , Michael B. Steer
  • , Angus I. Kingon
  • , Gregory T. Stauf

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Barium Strontium Titanate (BST) has a fielddependent permittivity and can be used as a dielectric in voltage tunable capacitors or varactors. These BST-based varactors are passive devices and have significantly different properties compared to semiconductor varactors. A voltage tunable oscillator using a BST thin film varactor was designed and characterized. The frequency of oscillation varied from 34.8MHz to 44.5 MHz (28% tuning) upon application of 7 volts tuning voltage. The VCO gain was 1.38MHz/V and the 2 nd harmonic was over 23dB below the fundamental throughout the tuning range.

Original languageEnglish (US)
Title of host publicationProceedings - 2004 IEEE Radio and Wireless Conference, RAWCON
EditorsG. Heiter
Pages91-94
Number of pages4
StatePublished - 2004
EventProceedings - 2004 IEEE Radio and Wireless Conference, RAWCON - Atlanta, GA, United States
Duration: Sep 19 2004Sep 22 2004

Publication series

NameProceedings - 2004 IEEE Radio and Wireless Conference, RAWCON

Other

OtherProceedings - 2004 IEEE Radio and Wireless Conference, RAWCON
Country/TerritoryUnited States
CityAtlanta, GA
Period9/19/049/22/04

All Science Journal Classification (ASJC) codes

  • General Engineering

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