Dual-slot feeding technique for broadband Fabry–Perot cavity antennas

Author

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

Author_Institution

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

Volume

9

Issue

9

fYear

2015

fDate

6 18 2015

Firstpage

861

Lastpage

866

Abstract

A dual-slot feeding technique is proposed for broadband multi-layer periodic Fabry-Perot cavity (FPC) antennas achieving enhanced directivity as well as broadband radiation and matching performance. To demonstrate the feeding technique, two FPC antennas are presented formed by two- and three-layer periodic partially reflective surfaces (PRSs) placed in front of a ground plane. Two optimised microstrip-fed rectangular slots of different lengths etched on the ground plane are used to feed the multi-layer cavity antennas and significantly enhance the antenna bandwidth as well as the directivity performance. Measurements of a fabricated three-layer PRS antenna prototype are presented exhibiting 19 dBi gain with 16% fractional bandwidth and validating the simulation results.

Keywords

antenna feeds; broadband antennas; microstrip antennas; slot antennas; FPC antennas; PRS antenna prototype; antenna bandwidth; broadband Fabry-Perot cavity antennas; broadband multilayer periodic Fabry-Perot cavity; directivity performance; dual slot feeding technique; ground plane; multilayer cavity antenna feeds; optimised microstrip-fed rectangular slots; partially reflective surfaces;

fLanguage

English

Journal_Title

Microwaves, Antennas & Propagation, IET

Publisher

iet

ISSN

1751-8725

Type

jour

DOI

10.1049/iet-map.2014.0530

Filename

7127150