Increasing the Supergain of Electrically Small Antennas Using Metamaterials

Konferenz: EuCAP 2009 - 3rd European Conference on Antennas and Propagation
23.03.2009 - 27.03.2009 in Berlin, Germany

Tagungsband: EuCAP 2009

Seiten: 3Sprache: EnglischTyp: PDF

Persönliche VDE-Mitglieder erhalten auf diesen Artikel 10% Rabatt

Yaghjian, Arthur D. (Research Consultant, 115 Wright Road, Concord MA 01742 USA)

Uzkov’s determination of the maximum possible directivity (N2) of N isotropic acoustic radiators is generalized to antenna elements with the radiation patterns of crossed electric and magnetic dipoles (Huygens sources). In particular, it is shown that resonant Huygens-source elements forming an electrically small two-element parasitic (Yagi-like) array can, in principle, have a free-space gain as high as 9 dB. Two possible realizations of electrically small resonant Huygens sources are discussed: one modeled after an existing resonant miniature antenna, and a second consisting of resonant magnetodielectric spheroids.