Two feeding methods based on substrate integrated waveguide for microstrip patch antennas

Author

Mikulasek, Tomas ; Lacik, Jaroslav

Author_Institution

Dept. of Radio Electron., Brno Univ. of Technol., Brno, Czech Republic

Volume

9

Issue

5

fYear

2015

fDate

4 13 2015

Firstpage

423

Lastpage

430

Abstract

Two feeding methods for microstrip patch antennas (MPAs), namely aperture coupling (AC) and probe feeding (PF), based on a substrate integrated waveguide (SIW) are presented in this study. Exploiting an SIW structure for MPA feeding combines the benefits of both structures. It results in a compact antenna structure retaining advantageous properties of MPAs and having a radiation characteristic non-effected by spurious radiation that is usually produced by a conventional feeding line. The proposed antenna structures are studied using parametric analyses and their design procedures are presented. The antenna structures are fabricated and verified by measurement at 10 GHz. At the operation frequency, the fabricated AC-MPA and PF-MPA with a coax-to-SIW transition achieved an impedance bandwidth of 9 and 13.1% and a gain of 8.6 and 9.2 dBi, respectively.

Keywords

antenna feeds; antenna radiation patterns; coaxial waveguides; microstrip antennas; substrate integrated waveguides; MPA feeding; SIW structure; aperture coupling; coax-to-SIW transition; compact antenna structure; feeding methods; frequency 10 GHz; gain 8.6 dB; gain 9.2 dB; impedance bandwidth; microstrip patch antennas; parametric analysis; probe feeding; spurious radiation characteristic; substrate integrated waveguide;

fLanguage

English

Journal_Title

Microwaves, Antennas & Propagation, IET

Publisher

iet

ISSN

1751-8725

Type

jour

DOI

10.1049/iet-map.2014.0157

Filename

7084242