Title :
Synthesis of small axis-symmetrical shaped integrated lens antennas: Comparison between full-wave and high-frequency optimization strategies
Author :
Rolland, A. ; Sauleau, R. ; Nguyen, N.T. ; Drissi, M.
Author_Institution :
Inst. d´´Electron. et de Telecommun. de Rennes, Univ. de Rennes, Rennes
Abstract :
A CAD tool based on real-coded GA and BoR-FDTD has been implemented for the synthesis of axis-symmetrical radiating structures of moderate size. It has been validated numerically via the optimization of small-size single-shell integrated lens antennas (ILAs) fed by dielectric-loaded circular waveguide. It has been shown that shaping the lens surface using BoR-FDTD enables one to enhance the peak directivity compared to the GO predictions. Comparison with the performance of two lens prototypes synthesized with our BoR-FDTD/GA and GO / PO-GA tools has highlighted the limitations of the GO / PO approach.
Keywords :
antenna feeds; finite difference time-domain analysis; genetic algorithms; lens antennas; optimisation; BoR-FDTD; CAD tool; GO predictions; axis-symmetrical radiating structures; dielectric-loaded circular waveguide; full-wave optimization strategies; high-frequency optimization strategies; peak directivity; real-coded GA; small axis-symmetrical shaped integrated lens antennas; small-size single-shell integrated lens antennas; Dielectrics; Electromagnetic scattering; Feeds; Frequency; Geometrical optics; Lenses; Optical materials; Optimization methods; Permittivity; Physical optics;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2008. AP-S 2008. IEEE
Conference_Location :
San Diego, CA
Print_ISBN :
978-1-4244-2041-4
Electronic_ISBN :
978-1-4244-2042-1
DOI :
10.1109/APS.2008.4619131
