%0 Journal Article 
%A Poveda García, Miguel
%A Cañete Rebenaque, David
%A Goussetis, George
%A Gómez Tornero, José Luis
%T Coupling substrate-integrated waveguides to increase the gain bandwidth of Leaky-wave antennas
%D 2018
%@ 0018-9480
%U http://hdl.handle.net/10317/9717
%X A novel technique to increase the pattern bandwidth of substrate-integrated waveguide leaky-wave antennas (SIW LWAs) is proposed. By coupling several SIWs, it is shown that the gain at the desired angle can be kept stable across a wide-frequency band. A systematic design methodology based on a simple transverse equivalent network is presented. Practical coupled-SIW designs with gain exceeding 10 dB and pointing at 30° in the 15-GHz band are reported to validate the theory. Simulation and experimental results demonstrate an enhancement of the half-power gain bandwidth from 2.5% (380 MHz) in the single-SIW design to 9% (1360 MHz) for an LWA composed of three coupled SIWs. IEEE.
%K Broadband  antennas
%K Frequency  beam  squint
%K Leaky-wave antennas
%K Substrate integrated waveguide
%K Teoría de la Señal y las Comunicaciones
%K 3307.01 Antenas
%~ GOEDOC, SUB GOETTINGEN