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

Publication: Research - peer-reviewJournal article – Annual report year: 2011

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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, 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.
Original languageEnglish
JournalIEEE Transactions on Antennas and Propagation
Publication date2011
Volume59
Issue2
Pages679-681
ISSN0018926x
DOIs
StatePublished

Bibliographical note

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CitationsWeb of Science® Times Cited: 8

Keywords

  • Chu lower bound, Quality factor, Magnetic dipole, Fundamental limitations, Electrically small antennas
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