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

fYear

2008

fDate

5-11 July 2008

Firstpage

1

Lastpage

4

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/APS.2008.4619131

Filename

4619131