Phase-gradient metasurfaces for beam steerable antennas

Author

Ghasemi, Abdorasoul ; Burokur, Shah Nawaz ; Dhouibi, Abdallah ; de Lustrac, Andre

Author_Institution

IEF, Univ. Paris-Sud, Orsay, France

fYear

2014

fDate

4-6 March 2014

Firstpage

191

Lastpage

194

Abstract

Metasurfaces presenting a phase-gradient are designed at 10 GHz and are proposed to steer an antenna´s radiated beam from broadside towards endfire direction. The metasurfaces are composed of both inductive and capacitive grids and the phase-gradient is achieved by modifying the elements in the inductive grid. Such phase-gradient metasurfaces are utilized as Partially Reflecting Surfaces (PRS) in Fabry-Pérot (FP) leaky-wave antennas (LWAs). Depending on the gradient used, beam steering up to 60° has been observed numerically and verified experimentally.

Keywords

antenna radiation patterns; beam steering; leaky wave antennas; metamaterial antennas; Fabry-Pérot leaky-wave antennas; antenna beam steering; beam steerable antennas; capacitive grids; frequency 10 GHz; inductive grids; partially reflecting surfaces; phase-gradient metasurfaces; radiated beam; Antenna measurements; Beam steering; Cavity resonators; Directive antennas; Reflection; Reflector antennas; Beam steering; Fabry-Pérot (FP) cavity; Partially Reflecting Surface (PRS); leaky-wave antenna (LWA); phasegradient;

fLanguage

English

Publisher

ieee

Conference_Titel

Antenna Technology: "Small Antennas, Novel EM Structures and Materials, and Applications" (iWAT), 2014 International Workshop on

Conference_Location

Sydney, NSW

Print_ISBN

978-1-4799-2331-1

Type

conf

DOI

10.1109/IWAT.2014.6958635

Filename

6958635