Folded Corrugated SIW (FCSIW) Slot Antenna for Backlobe Suppression

Author

Daekeun Cho ; Hai-young Lee

Author_Institution

Ajou Univ., Suwon, South Korea

Volume

12

fYear

2013

fDate

2013

Firstpage

1276

Lastpage

1279

Abstract

A novel substrate integrated waveguide (SIW) slot antenna having folded corrugated stubs is proposed for suppressing the backlobes of the SIW slot antenna associated with the diffraction of the spillover current. The longitudinal array of the folded stubs replacing the SIW via-holes effectively prevents the propagation of the surface spillover current. The measured front-to-back ratio (FTBR) has been greatly (15 dB) improved from that of the common SIW slot antenna. We expect that the proposed folded corrugated SIW (FCSIW) slot antenna plays an important role for reducing the excessive backside radiation of the SIW slot antenna and for decreasing mutual coupling in SIW slot antenna arrays.

Keywords

slot antenna arrays; substrate integrated waveguides; SIW slot antenna arrays; backlobe suppression; front-to-back ratio; spillover current diffraction; substrate integrated waveguide; Antenna arrays; Antenna measurements; Arrays; Slot antennas; Substrates; Surface impedance; Backlobes level; corrugation; folded corrugated substrate integrated waveguide (FCSIW); slot antenna; substrate integrated waveguide (SIW);

fLanguage

English

Journal_Title

Antennas and Wireless Propagation Letters, IEEE

Publisher

ieee

ISSN

1536-1225

Type

jour

DOI

10.1109/LAWP.2013.2283535

Filename

6617719