A Fixed-Frequency Beam-Steerable Half-Mode Substrate Integrated Waveguide Leaky-Wave Antenna

Author

Suntives, A. ; Hum, S.V.

Author_Institution

Dept. of Electr. & Comput. Eng., Univ. of Toronto, Toronto, ON, Canada

Volume

60

Issue

5

fYear

2012

fDate

5/1/2012 12:00:00 AM

Firstpage

2540

Lastpage

2544

Abstract

A single-layer design of a half-mode substrate integrated waveguide (HMSIW) leaky-wave antenna (LWA) possessing fixed-frequency beam steering capability is presented in this communication. The antenna is loaded by series and shunt capacitive tuning elements, providing two degrees of freedom in which its dispersion characteristic can be manipulated. An antenna with a length of 3.25 λ₀ was implemented using fixed capacitors and experimentally validated. The measurements demonstrate a beam steering range between -31^° and +35^° at 6.5 GHz. The measured antenna gain is shown to be better than 9.5 dBi with circular polarization.

Keywords

beam steering; capacitors; leaky wave antennas; substrate integrated waveguides; HMSIW; LWA; circular polarization; degrees of freedom; dispersion characteristic; fixed capacitors; fixed-frequency beam steering capability; frequency 6.5 GHz; half-mode substrate integrated waveguide; leaky-wave antenna; series capacitive tuning elements; shunt capacitive tuning elements; single-layer design; Antenna measurements; Antennas; Capacitors; Gain; Prototypes; Substrates; Beam steering; leaky-wave antennas; metamaterials; reconfigurable antennas; substrate integrated waveguide;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/TAP.2012.2189726

Filename

6162954