Narrow-beam antennas using an artificial dielectric medium with permittivity less than unity

14 January 1971

journal article
Published by Institution of Engineering and Technology (IET) in Electronics Letters

Vol. 7 (1) , 16-18
https://doi.org/10.1049/el:19710012

Abstract

Radiation from a line source of electric current placed inside a slab of artificial dielectric medium with a permittivity less than unity has been studied. It is found that radiation patterns with single or multiple narrow beams may be obtained by the proper choice of parameters. In a typical case for ε_r=0.1378, μ_r=1.322, a beamwidth of about 1° is obtained when the thickness of artificial dielectric slab is about 2.33 times the wavelength.

Keywords

MULTIPLE NARROW BEAMS
ARTIFICIAL DIELECTRIC MEDIUM WITH PERMITTIVITY LESS THAN UNITY
NARROW BEAM ANTENNAS
EVEN MODE
SINGLE NARROW BEAMS
ODD MODE
ANTENNA RADIATION PATTERNS

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