%0 Journal Article 
%A Gómez Tornero, José Luis
%A Cañete Rebenaque, David
%A Álvarez Melcón , Alejandro
%T Microstrip leaky-wave antenna with control of leakage rate and only one main beam in the azimuthal plane
%D 2008
%@ 0018-926X
%U http://hdl.handle.net/10317/639
%X An original leaky-wave antenna (LWA), conceived
from a microstrip line which is laterally shielded by parallel plates,
is presented in this paper. This structure shows, for the first time,
that the leakage rate of a microstrip leaky-mode can be easily
controlled while negligibly affecting the pointing direction. The
antenna is based on the radiation from the second higher order
mode of the microstrip line, which is perturbed by the addition
of the two conductor walls to control the level of the leakage
rate. The parallel-plates also serve as a mechanism to obtain a
single main beam in the azimuthal plane, therefore improving the
radiation pattern compared to common dual-beam second-higher
order mode microstrip LWAs. The proposed antenna is analyzed
by obtaining the corresponding leaky-mode complex propagation
constant, which is calculated by a specific method of moments
approach. The modal results obtained from the leaky-mode
dispersion curves are validated with analysis performed on a
three-dimensional structure using commercial finite element
method solver. Also, a prototype is fabricated to experimentally
confirm the advantages of this novel leaky-wave line source.
%K Teoría de la Señal y las Comunicaciones
%K Tipo de control de fugas
%K Antena de filtración de ondas
%K Blindaje lateral de tecnología microstrip
%K Laterally shielded microstrip technology
%K Leaky wave antenna (LWA)
%K Leakage rate control
%~ GOEDOC, SUB GOETTINGEN