TY - JOUR 
A1 - Gómez Tornero, José Luis
AU - Quesada Pereira, Fernando Daniel
AU - Álvarez Melcón , Alejandro
T1 - Application of the high-gain substrate-superstrate configuration to dielectric leaky-wave antennas
Y1 - 2005
SN - 1531-1309
UR - http://hdl.handle.net/10317/647
AB - The high-gain substrate-superstrate configuration,
which was proposed to increase the gain in printed circuit antennas,
is applied to dielectric leaky-wave antennas (LWAs) to
improve its frequency response. Analysis of a slitted suspended
dielectric rectangular waveguide is carried out using a full-wave
method. It is proved that the minimum values of the leakage
constant of the leaky-wave mode for the suspended configuration
are related to the high-gain resonance conditions. Moreover, it is
found that the suspended LWA exhibits very small beamwidth
variations in a large frequency bandwidth. It is well-known that
inhomogeneous filled LWAs suffer from variation of beamwidth
as the angle of maximum radiation is scanned with frequency.
The proposed topology can be adjusted so that a flat response of
the beamwidth can be obtained in a large frequency band, while
maintaining the frequency-scanning behavior of the LWA.
KW - Teoría de la Señal y las Comunicaciones
KW - Antena leaky wave
KW - Antena de onda milimétrica
KW - Leaky wave antenna (LWA)
KW - Millimeter wave antenna
LA - eng
PB - IEEE Microwave Theory and Techniques Society
ER -