Electric Dipole Antennas With Magnetic-Coated PEC Cores: Reaching the Chu Lower Bound on Q

Oleksiy S. Kim

Research output: Contribution to journalJournal articleResearchpeer-review

293 Downloads (Pure)

Abstract

The radiation properties of spherical electric dipole antennas with electric current excitation and material-coated perfectly electrically conducting (PEC) cores are investigated analytically using vector spherical wave functions. Closed-form expressions for electric and magnetic stored energy as well as the radiation quality factor $Q$ are derived. Using these, it is shown that properly selected magnetic coating and radius of the PEC core vastly reduce the internal stored energy, and thus make the $Q$ of an electric dipole antenna approach the Chu lower bound.
Original languageEnglish
JournalI E E E Transactions on Antennas and Propagation
Volume60
Issue number3
Pages (from-to)1616-1619
ISSN0018-926X
DOIs
Publication statusPublished - 2012

Fingerprint Dive into the research topics of 'Electric Dipole Antennas With Magnetic-Coated PEC Cores: Reaching the Chu Lower Bound on Q'. Together they form a unique fingerprint.

Cite this