Title :
Lens-Corrected Axis-Symmetrical Shaped Horn Antenna in Metallized Foam With Improved Bandwidth
Author :
Rolland, Anthony ; Boriskin, Artem V. ; Person, Christian ; Quendo, Cedric ; Le Coq, Laurent ; Sauleau, Ronan
Author_Institution :
Inst. of Electron. & Telecommun. of Rennes (IETR), Univ. of Rennes 1, Rennes, France
fDate :
7/4/1905 12:00:00 AM
Abstract :
A lens-corrected smooth-walled axis-symmetrical dielectric-loaded horn antenna is designed and characterized in Ka-band using the bodies of revolution finite-difference time domain (BoR-FDTD) technique and genetic algorithm. The joint optimization of the horn and dielectric loading profiles enables us to develop a horn with a very good gain performance achieved in a frequency range of about 18%. Compared to earlier results, the bandwidth improvement exceeds a factor two. A lightweight prototype is fabricated in metallized foam. A very good agreement between the numerical and measured data is obtained.
Keywords :
dielectric-loaded antennas; finite difference time-domain analysis; genetic algorithms; horn antennas; lens antennas; metal foams; BoR-FDTD technique; Ka-band characterizeation; bodies of revolution finite-difference time domain technique; dielectric loading profile; genetic algorithm; horn loading profile; lens-corrected axis-symmetrical shaped horn antenna; lens-corrected smooth-walled axis-symmetrical dielectric-loaded horn antenna; metallized foam; Bandwidth; Dielectrics; Fabrication; Gain; Horn antennas; Optimization; Bodies of revolution finite-difference time domain (BoR-FDTD); genetic algorithm; metallized foam; millimeter waves; smooth-walled shaped horns;
Journal_Title :
Antennas and Wireless Propagation Letters, IEEE
DOI :
10.1109/LAWP.2011.2182596
