Title :
Novel meta-surfaces for the design of broadband highly directive antennas
Author :
Konstantinidis, Konstantinos ; Feresidis, Alexandros P.
Author_Institution :
Sch. of Electron., Univ. of Birmingham, Birmingham, UK
Abstract :
Novel meta-surfaces for designing broadband highly directive Fabry-Perot type antennas are presented. The proposed structure is based on novel optimized multi-layer periodic surfaces that create multiple sub-wavelength cavities with enhanced bandwidth performance. Two double-layer periodic arrays of dissimilar dimensions are designed and optimized, each double-layer array consisting of an Artificial Magnetic Conductor (AMC) and a Partially Reflective Surface (PRS) printed on either side of a dielectric substrate. The two double-layer metasurfaces are placed at about quarter wavelength from a ground plane and from each other. An antenna of 18.3dBi directivity and 8% 3-dB radiation bandwidth is obtained.
Keywords :
broadband antennas; directive antennas; AMC; Fabry-Perot type antennas; artificial magnetic conductor; broadband highly directive antennas; dielectric substrate; double-layer metasurfaces; double-layer periodic arrays; multilayer periodic surfaces; partially reflective surface; Bandwidth; Broadband antennas; Broadband communication; Cavity resonators; Optical surface waves; Reflection;
Conference_Titel :
Advanced Electromagnetic Materials in Microwaves and Optics (METAMATERIALS), 2014 8th International Congress on
Conference_Location :
Lyngby
Print_ISBN :
978-1-4799-3450-8
DOI :
10.1109/MetaMaterials.2014.6948635
