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

Author

Ngoc Tinh Nguyen ; Boriskin, Artem V. ; Rolland, Antoine ; Le Coq, Laurent ; Sauleau, Ronan

Author_Institution

Inst. d´Electron. et de Telecommun. de Rennes (IETR), Univ. of Rennes 1, Rennes, France

Volume

61

Issue

4

fYear

2013

fDate

4/1/2013 12:00:00 AM

Firstpage

1658

Lastpage

1664

Abstract

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.

Keywords

antenna radiation patterns; electrical engineering computing; genetic algorithms; geometrical optics; lens antennas; physical optics; ultra wideband antennas; LLDA; Rexolite; UWB antennas; axis-symmetrical Gaussian-like radiation pattern; dome core; dome profile; foam; frequency 50 GHz to 75 GHz; genetic algorithm; geometrical optics-physical optics technique; in-house software; low-dispersive gain; matching layers; multishell lens-like dome antenna; shaped lens-like dome; Antenna radiation patterns; Dielectrics; Feeds; Lenses; Optimization; Reflection; Ultra wideband antennas; Beam shaping; Gaussian-like pattern; UWB antenna; genetic algorithm; geometrical optics; lens-like dome; matching layer; physical optics;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/TAP.2012.2220320

Filename

6310030