Multi-layer sub-wavelength profile broadband leaky-wave antenna

Author

Konstantinidis, Konstantinos ; Feresidis, Alexandros P. ; Gardner, Peter ; Hall, Peter S.

Author_Institution

Sch. of Electron., Electr. & Comput. Eng., Univ. of Birmingham, Birmingham, UK

fYear

2014

fDate

6-9 Oct. 2014

Firstpage

893

Lastpage

896

Abstract

A new concept for designing subwavelength-profile and broadband high-gain leaky-wave antennas is introduced. A novel multi-layer periodic array design is proposed for subwavelength Fabry-Perot leaky-wave antennas 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. They are placed at about quarter wavelength from a ground plane and from each other. Thus, two air cavities are created with a total profile of less than λ/2. The proposed antenna has been simulated (using CST Microwave Studio™) achieving 18.3dBi directivity with 8% bandwidth. This gain-bandwidth product outperforms any previous Fabry-Perot antenna design with this profile.

Keywords

antenna arrays; broadband antennas; conductors (electric); electrical engineering computing; leaky wave antennas; substrate integrated waveguides; CST Microwave Studio; artificial magnetic conductor; bandwidth performance enhancement; broadband high-gain leaky-wave antennas; dielectric substrate; dissimilar dimensions; double-layer periodic arrays; gain-bandwidth product; multilayer periodic array design; multilayer subwavelength profile broadband leaky-wave antenna; partially reflective surface; subwavelength Fabry-Perot leaky-wave antennas; Arrays; Bandwidth; Cavity resonators; Dipole antennas; Optical surface waves; Reflection; Artificial magnetic conductor; Fabry-Perot cavity; Leaky-wave antennas; Partially reflective surfaces;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Conference (EuMC), 2014 44th European

Conference_Location

Rome

Type

conf

DOI

10.1109/EuMC.2014.6986579

Filename

6986579