• DocumentCode
    1354617
  • Title

    Layered Al2O3-TiO2 composite dielectric resonators

  • Author

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

  • Author_Institution
    Centre for Phys. Electron. & Mater., South Bank Polytech., London, UK
  • Volume
    36
  • Issue
    10
  • fYear
    2000
  • fDate
    5/11/2000 12:00:00 AM
  • Firstpage
    883
  • Lastpage
    884
  • Abstract
    Aluminium oxide displays a very low tanδ at microwave frequencies. It also possesses a remarkably high thermal conductivity, ideal for heat dissipation in high power satellite filters. However, its temperature coefficient of the resonant frequency (τf) is approximately 60 ppm/K. It is shown that the application of a film of titanium oxide which has a Tf of opposite sign (45O ppm/K) produces a composite in which the τf can be tuned to be zero over a wide temperature range. The tanδ of the composite at zero Tf is 3.3×105 (Q=30000) at room temperature and at 10 GHz
  • Keywords
    alumina; composite materials; dielectric losses; dielectric resonators; titanium compounds; 10 GHz; Al2O3-TiO2; aluminium oxide; heat dissipation; high-power satellite filter; layered Al2O3-TiO2 composite dielectric resonator; loss angle; microwave frequency; resonant frequency; temperature coefficient; thermal conductivity; titanium oxide film;
  • fLanguage
    English
  • Journal_Title
    Electronics Letters
  • Publisher
    iet
  • ISSN
    0013-5194
  • Type

    jour

  • DOI
    10.1049/el:20000678
  • Filename
    850506
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=1354617