Title :
Novel topology of Fabry-Perot electronically steerable leaky-wave antenna
Author :
Guzmán-Quirós, Raúl ; Gómez-Tornero, José Luis ; García-Vigueras, María ; Weily, Andrew R. ; Guo, Y. Jay
Author_Institution :
Inf. & Commun. Technol. Dept., Tech. Univ. of Cartagena, Murcia, Spain
Abstract :
A novel topology of electronically-steerable one-dimensional Fabry-Perot leaky-wave antenna (LWA) is proposed. The structure is based on a host parallel-plate waveguide (PPW) which encloses a Fabry-Perot cavity created by two printed-circuits boards (PCB): a top planar partially reflective surface (PRS) and a bottom tunable high impedance surface (HIS) loaded with varactors. The control of the scattering properties of the bottom tunable HIS by the variation of the varactors´ capacitance enables control of the Fabry-Perot cavity resonance and thus the scanning of the antenna pointing angle from broadside towards the endfire direction at a fixed frequency. Full-wave simulations obtained with commercial finite element method solver (HFSS) demonstrate as a proof of concept a continuous scanning range of the pointing angle from 5° to 50° at a design frequency of 5.6 GHz.
Keywords :
Fabry-Perot resonators; beam steering; capacitance; electromagnetic wave scattering; finite element analysis; leaky wave antennas; parallel plate waveguides; printed circuits; reflectivity; varactors; Fabry-Perot LWA; Fabry-Perot cavity resonance; HIS; PCB; PRS; antenna pointing angle scanning; electronic steering; finite element method; frequency 5.6 GHz; high impedance surface; leaky wave antenna; parallel plate waveguide; partially reflective surface; printed circuit board; scattering property control; varactor capacitance; Cavity resonators; Leaky wave antennas; Surface impedance; Surface waves; Varactors; Leaky-wave antennas (LWA); frequency selective surfaces; high impedances surfaces; reconfigurable antennas;
Conference_Titel :
Antennas and Propagation (EUCAP), 2012 6th European Conference on
Conference_Location :
Prague
Print_ISBN :
978-1-4577-0918-0
Electronic_ISBN :
978-1-4577-0919-7
DOI :
10.1109/EuCAP.2012.6205891
