• DocumentCode
    1432968
  • Title

    Layered Al2O3-TiO2 composite dielectric resonators with tuneable temperature coefficient for microwave applications

  • Author

    Alford, N.McN. ; Breeze, J. ; Penn, S.J. ; Poole, M.

  • Author_Institution
    Centre for Phys. Electron., South Bank Polytech., London, UK
  • Volume
    147
  • Issue
    6
  • fYear
    2000
  • fDate
    11/1/2000 12:00:00 AM
  • Firstpage
    269
  • Lastpage
    273
  • Abstract
    Aluminium oxide displays very low dielectric loss factor (tan δ) at microwave frequencies. However, its temperature coefficient of resonant frequency (τf) is approximately -60 ppm/K and is unsatisfactory for certain applications. It is shown that applying a film of titanium oxide with a τf of 450 ppm/K produces a composite in which the τf can be tuned to zero over a wide temperature range. The tan δ of the composite at zero τ f is 3.3×10-5 (Q=30000) at room temperature (300 K) and at 10 GHz
  • Keywords
    alumina; composite materials; dielectric losses; dielectric resonators; titanium compounds; 10 GHz; 300 K; Al2O3-TiO2; Al2O3-TiO2 layered composite dielectric resonator; dielectric loss factor; microwave applications; resonant frequency; temperature coefficient; tuning;
  • fLanguage
    English
  • Journal_Title
    Science, Measurement and Technology, IEE Proceedings -
  • Publisher
    iet
  • ISSN
    1350-2344
  • Type

    jour

  • DOI
    10.1049/ip-smt:20000699
  • Filename
    899970
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=1432968