• DocumentCode
    2376769
  • Title

    Q Evaluation of Small Insulated Antennas in a Lossy Medium and Practical Radiation Efficiency Estimation

  • Author

    Lee, Jaechun ; Nam, Sangwook

  • Author_Institution
    Seoul Nat. Univ., Seoul
  • fYear
    2007
  • fDate
    15-16 Nov. 2007
  • Firstpage
    65
  • Lastpage
    68
  • Abstract
    Quality factors (Q) of small insulated antennas in a lossy dielectric medium are evaluated using Chu´s equivalent circuits of TM01 and TE01 spherical waves. Using the evaluated Q, the upper limit of radiation efficiency for the required bandwidth is calculated for the link loss estimation. The result shows that a magnetic type antenna has much higher Q and the advantage in its radiation efficiency is sacrificed at low frequency for the required bandwidth.
  • Keywords
    Q-factor; absorbing media; antennas; equivalent circuits; Chu equivalent circuit; Q evaluation; link loss estimation; lossy medium; practical radiation efficiency estimation; quality factors; small insulated antennas; Bandwidth; Biological system modeling; Dielectric losses; Dipole antennas; Endoscopes; Equivalent circuits; Humans; Insulation; Propagation losses; Transmitting antennas; Lossy medium; Q; radiation efficiency; small antenna;
  • fLanguage
    English
  • Publisher
    ieee
  • Conference_Titel
    Microwave Conference, 2007. KJMW 2007. Korea-Japan
  • Conference_Location
    Okinawa
  • Print_ISBN
    978-1-4244-1556-4
  • Type

    conf

  • DOI
    10.1109/KJMW.2007.4402241
  • Filename
    4402241
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=2376769