DocumentCode
1432246
Title
Chiral slab polarization transformer for aperture antennas
Author
Viitanen, Ari J. ; Lindell, Ismo V.
Author_Institution
Electromagn. Lab., Helsinki Univ. of Technol., Espoo, Finland
Volume
46
Issue
9
fYear
1998
fDate
9/1/1998 12:00:00 AM
Firstpage
1395
Lastpage
1397
Abstract
The cross polarization of large aperture antennas can be eliminated by a chiral slab transformer in front of the aperture to obtain a more efficient field pattern. The inhomogeneous chirality distribution required can easily be achieved by using a mixture of right- and left-hand helices so that the total density of the helices is constant inside the slab. Reflection from the slab can be eliminated by a proper design
Keywords
antenna radiation patterns; aperture antennas; chirality; electromagnetic wave polarisation; reflector antennas; aperture antennas; chiral slab polarization transformer; cross polarization; field pattern; inhomogeneous chirality distribution; left-hand helix; parabolic reflector antennas; reflection; right-hand helix; Antennas and propagation; Aperture antennas; Dipole antennas; Electromagnetic wave polarization; Impedance; Lenses; Reflection; Reflector antennas; Slabs;
fLanguage
English
Journal_Title
Antennas and Propagation, IEEE Transactions on
Publisher
ieee
ISSN
0018-926X
Type
jour
DOI
10.1109/8.719989
Filename
719989
Link To Document