The influence of complex material coverings on the quality factor of simple radiating systems

Author

Tretyakov, Sergei A. ; Maslovski, Stanislav I. ; Sochava, Alexander A. ; Simovski, Constantin R.

Author_Institution

Radio Lab./SMARAD, Helsinki Univ. of Technol., Finland

Volume

53

Issue

3

fYear

2005

fDate

3/1/2005 12:00:00 AM

Firstpage

965

Lastpage

970

Abstract

The influence of material coverings on the antenna quality factor is investigated for radiators formed by thin electric or magnetic line sources. It is shown that thin uniform and symmetric layers of arbitrary passive materials (including Veselago, left-handed, or double-negative materials) cannot help to overcome the bandwidth limitations imposed by the amount of energy stored in the antenna reactive field. Alternative possibilities offered by complex composite materials in the antenna design are identified.

Keywords

Q-factor; antenna radiation patterns; metamaterials; microstrip antennas; antenna quality factor; complex antenna design; complex material coverings; electric-magnetic line sources; metamaterial; microstrip antenna; radiating systems; Bandwidth; Dipole antennas; Laboratories; Loaded antennas; Magnetic materials; Magnetic resonance; Magnetic separation; Microstrip antennas; Q factor; Space technology; Antennas; bandwidth; efficiency; metamaterial;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/TAP.2004.842672

Filename

1406226