Switched fragmented aperture antennas

Author

Maloney, J.C. ; Kesler, M.P. ; Lust, L.M. ; Pringle, L.N. ; Fountain, T.L. ; Harms, P.H. ; Smith, G.S.

Author_Institution

Signature Technol. Lab., Georgia Tech. Res. Inst., Atlanta, GA, USA

Volume

1

fYear

2000

fDate

16-21 July 2000

Firstpage

310

Abstract

This paper introduces a reconfigurable aperture concept derived from fragmented aperture design where the configuration of the fragmented aperture may be switched by the user to obtain different functionalities. A fragmented aperture antenna is a patchwork of discrete conducting and dielectric units distributed over the specified aperture. The arrangement of the units is determined using an efficient, multistage procedure that incorporates the genetic algorithm for optimization and the finite-difference time-domain method for the electromagnetic computation. Typically, the criterion for optimum performance has been broadband gain at a particular angle. The resulting antennas contain isolated scattering structures that are fragmented in appearance.

Keywords

finite difference time-domain analysis; genetic algorithms; microstrip antenna arrays; antenna array; broadband gain; discrete conducting units; discrete dielectric units; electromagnetic computation; finite-difference time-domain method; fragmented aperture design; genetic algorithm; in-band measured antenna pattern; isolated scattering structures; multistage procedure; optimization; reconfigurable aperture; switched fragmented aperture antennas; Antenna measurements; Aperture antennas; Bandwidth; Dielectrics; Genetic algorithms; Magnetic switching; Optimization methods; Performance gain; Switches; Testing;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium, 2000. IEEE

Conference_Location

Salt Lake City, UT, USA

Print_ISBN

0-7803-6369-8

Type

conf

DOI

10.1109/APS.2000.873823

Filename

873823