Shaped Lens-Like Dome for UWB Antennas With a Gaussian-Like Radiation Pattern

A multi-shell lens-like dome antenna (LLDA) with an axis-symmetrical Gaussian-like radiation pattern is presented. The dome profile is optimized using in-house software based on the genetic algorithm and Geometrical Optics/Physical Optics technique. Stable radiation characteristics are achieved with...

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Bibliographic Details
Published inIEEE transactions on antennas and propagation Vol. 61; no. 4; pp. 1658 - 1664
Main Authors Ngoc Tinh Nguyen, Boriskin, A. V., Rolland, A., Le Coq, Laurent, Sauleau, R.
Format Journal Article
LanguageEnglish
Published IEEE 01.04.2013
Institute of Electrical and Electronics Engineers
Subjects
Antenna radiation patterns
Beam shaping
Dielectrics
Feeds
Gaussian-like pattern
genetic algorithm
geometrical optics
lens-like dome
Lenses
matching layer
Optimization
physical optics
Reflection
Ultra wideband antennas
UWB antenna
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Summary:A multi-shell lens-like dome antenna (LLDA) with an axis-symmetrical Gaussian-like radiation pattern is presented. The dome profile is optimized using in-house software based on the genetic algorithm and Geometrical Optics/Physical Optics technique. Stable radiation characteristics are achieved within the entire V-band (50-75 GHz), thanks to the optimized shape and also the introduction of two matching layers inside and outside of the dome. The dome core and matching layers of the LLDA are fabricated in Rexolite and foam, respectively. A good agreement between the measured and simulated data is obtained. The capability of a multi-shell dome antenna to produce a low-dispersive gain and Gaussian-like radiation pattern is illustrated.
ISSN:0018-926X
1558-2221
DOI:10.1109/TAP.2012.2220320