SIW-Slot-Fed Thin Beam-Squint-Free Fabry-Pérot Cavity Antenna With Low Backlobe Levels

Author

Wei Liu ; Zhi Ning Chen ; See, Terence Shie Ping ; Falin Liu

Author_Institution

Dept. of Electron. Eng. & Inf. Sci., Univ. of Sci. & Technol. of China, Hefei, China

Volume

13

fYear

2014

fDate

2014

Firstpage

552

Lastpage

554

Abstract

The substrate integrated waveguide (SIW)-slot feeding structure is introduced in a fully substrate-integrated thin Fabry-Pérot cavity (FPC) antenna to achieve the boresight radiation free of beam squint and with low backward radiation levels. Single longitudinal slot symmetrically cut onto the broadwall (the ground plane of the FPC) of the SIW is proposed to feed the FPC antenna in order to point maximum radiation at boresight and avoid frequency-dependent beam squint caused by conventional asymmetrically edge-fed feeding patch. The beam-squint variation of 11.3 ° along with the edge-fed patch feed is significantly reduced to 0.3 ° within the operating bandwidth of 9.8-10.1 GHz using the proposed SIW-slot feed. The comparison of the radiation performance shows the proposed SIW-slot-fed FPC antenna suitable for integrated circuits.

Keywords

Fabry-Perot resonators; antenna feeds; antenna radiation patterns; microwave antennas; slot antennas; substrate integrated waveguides; SIW-slot feeding structure; SIW-slot-fed FPC antenna; boresight radiation; broadwall; edge-fed feeding patch; frequency 9.8 GHz to 10.1 GHz; frequency-dependent beam squint; ground plane; integrated circuits; maximum radiation; radiation performance; single longitudinal slot; substrate integrated waveguide-slot feeding structure; substrate-integrated thin Fabry-Pérot cavity antenna; Antenna feeds; Cavity resonators; Directive antennas; Gain; Slot antennas; Substrates; Beam squint; Fabry-Pérot cavity; high-gain antenna; low profile; substrate integrated waveguide;

fLanguage

English

Journal_Title

Antennas and Wireless Propagation Letters, IEEE

Publisher

ieee

ISSN

1536-1225

Type

jour

DOI

10.1109/LAWP.2014.2311813

Filename

6767053