DocumentCode :
1131697
Title :
Design of Tapered Leaky-Wave Antennas in Hybrid Waveguide-Planar Technology for Millimeter Waveband Applications
Author :
Gómez-Tornero, José Luis ; Martínez, Alejandro De La Torre ; Rebenaque, David Cañete ; Gugliemi, Marco ; Álvarez-Melcón, Alejandro
Author_Institution :
Dept. de Tecnologias de la Informacion y las Comuniaciones, Univ. Politecnica de Cartagena, Murcia, Spain
Volume :
53
Issue :
8
fYear :
2005
Firstpage :
2563
Lastpage :
2577
Abstract :
Different types of waveguide leaky-wave antennas, asymmetrically perturbed with printed-circuits, are studied in this paper. The capability to modify the leakage constant of the excited leaky-wave mode, while maintaining unchanged its phase constant, is studied in detail for each design. Several slot and strip configurations are proposed, in which the width and the position of the planar printed circuit perturbation is modified along the length of the antenna to obtain different tapering topologies. All of them are mechanically flexible to realize, thus simplifying the manufacturing process for millimeter wavelengths applications. The two-dimensional method used for the analysis is accurate for any geometry of the planar perturbation, and also allows for the computation of the whole spectrum of modes in these open waveguides. This makes possible to predict the appearance of unwanted channel-guide modes, and also allows for the study of the coupling effect between the desired leaky-wave mode and them. A tapered design is performed and compared with full-wave three-dimension simulations to validate the proposed technology.
Keywords :
electromagnetic coupling; leaky wave antennas; microstrip antennas; millimetre wave antennas; perturbation theory; printed circuit design; rectangular waveguides; slot antennas; waveguide theory; channel-guide mode; coupling effect; excited leaky-wave mode; hybrid waveguide; millimeter waveband application; phase constant; planar printed circuit perturbation; sidelobe level control; slot configuration; strip configuration; tapered leaky-wave antenna; two-dimensional method; Circuit topology; Computational geometry; Computational modeling; Flexible printed circuits; Leaky wave antennas; Manufacturing processes; Millimeter wave circuits; Millimeter wave technology; Planar waveguides; Slot antennas; Hybrid waveguide printed circuit technology; leaky-wave antennas; millimeter wave antennas; sidelobes level control; tapering antennas;
fLanguage :
English
Journal_Title :
Antennas and Propagation, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-926X
Type :
jour
DOI :
10.1109/TAP.2005.850741
Filename :
1492601
Link To Document :
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