Title :
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
fDate :
5/1/2012 12:00:00 AM
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;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
DOI :
10.1109/TAP.2012.2189726
