Decreasing the radiation quality factor of magnetic dipole antennas by a magnetic-coated metal core

Oleksiy S. Kim, Olav Breinbjerg

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

Abstract

To achieve the Chu lower bound for the radiation Q, an electrically small magnetic dipole antenna should not store any magnetic energy internally to the minimum sphere enclosing the antenna. As shown in our previous works, the internal stored magnetic energy can be reduced, although not entirely eliminated, by introducing a solid magnetic core inside the antenna. In this paper, using analytical results obtained though the vector spherical wave theory, we show that the internal stored magnetic energy can be further reduced, and the Chu lower bound reached, for a spherical magnetic dipole antenna with a magnetic-coated PEC core.
Original languageEnglish
Title of host publicationProc. International Conference on Applied Electromagnetics and Communications
Publication date2010
Pages1-3
ISBN (Print)978-953-6037-58-2
Publication statusPublished - 2010
EventInternational Conference on Applied Electromagnetics and Communications - Dubrovnik, Croatia
Duration: 1 Jan 2010 → …
Conference number: 20

Conference

ConferenceInternational Conference on Applied Electromagnetics and Communications
Number20
CityDubrovnik, Croatia
Period01/01/2010 → …

Keywords

  • Chu lower bound
  • Magnetic dipole
  • Q-factor
  • Electrically small antennas

Cite this

Kim, O. S., & Breinbjerg, O. (2010). Decreasing the radiation quality factor of magnetic dipole antennas by a magnetic-coated metal core. In Proc. International Conference on Applied Electromagnetics and Communications (pp. 1-3)