• DocumentCode
    1393036
  • Title

    Lower Bound for the Radiation Q of Electrically Small Magnetic Dipole Antennas With Solid Magnetodielectric Core

  • Author

    Kim, Oleksiy S. ; Breinbjerg, Olav

  • Author_Institution
    Dept. of Electr. Eng., Tech. Univ. of Denmark, Lyngby, Denmark
  • Volume
    59
  • Issue
    2
  • fYear
    2011
  • Firstpage
    679
  • Lastpage
    681
  • Abstract
    A new lower bound for the radiation Q of electrically small spherical magnetic dipole antennas with solid magnetodielectric core is derived in closed form using the exact theory. The new bound approaches the Chu lower bound from above as the antenna electrical size decreases. For ka <; 0.863, the new bound is lower than the bounds for spherical magnetic as well as electric dipole antennas composed of impressed electric currents in free space.
  • Keywords
    antenna radiation patterns; dipole antennas; Chu lower bound; electric currents; electrically small spherical magnetic dipole antennas; exact theory; solid magnetodielectric core; Chu lower bound; electrically small antennas; fundamental limitations; magnetic dipole; quality factor;
  • fLanguage
    English
  • Journal_Title
    Antennas and Propagation, IEEE Transactions on
  • Publisher
    ieee
  • ISSN
    0018-926X
  • Type

    jour

  • DOI
    10.1109/TAP.2010.2096394
  • Filename
    5654643
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=1393036