Title :
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
fDate :
4/1/2013 12:00:00 AM
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;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
DOI :
10.1109/TAP.2012.2220320
