Title :
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
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;
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
DOI :
10.1109/IWAT.2014.6958635
