Simple analysis and design of a new leaky-wave directional coupler in hybrid dielectric-waveguide printed-circuit technology

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URI: http://hdl.handle.net/10317/1268
ISSN: 0018-9480
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Author
Gómez Tornero, José Luis; Martínez López, Sofía; Álvarez Melcón , Alejandro
Research Group
Grupo de Electromagnetismo Aplicado a las Telecomunicaciones (GEAT)
Knowledge Area
Teoría de la Señal y las Comunicaciones
Sponsors
This work was supported in part under Spanish National Project ESP2001-4546-PE and Spanish National Project TEC2004-04313-C02-02-TCM and under the Regional Séneca Project 2002PB/4/FS/02.
Publication date
2006-09
Publisher
IEEE Microwave Theory and Techniques Society
Bibliographic Citation
GÓMEZ TORNERO, José Luis, MARTÍNEZ LÓPEZ, Sofía, ÁLVAREZ MELCÓM, Alejandro. Simple analysis and design of a new leaky-wave directional coupler in hybrid dielectric-waveguide printed-circuit technology. IEEE Transactions on Microwave Theory and Techniques, 54 (9): 3534 - 3542, Septiembre 2006. ISSN 0018-9480
Keywords
Acoplador direccional
Óptica geométrica
Fuga de ondas
Método de momentos
Directional coupler
Geometrical Optics (GO)
Leaky waves
Method of Moments (MOM)
Abstract
This paper presents a new theory to analyze and design a novel leaky-wave coupler based on a hybrid dielectric-waveguide printed-circuit technology. The analysis theory is based on a combined method of moments (MoM) geometrical optics (GO) technique, which makes use of the leaky mode complex propagation constant. This MoM-GO approach allows to easily obtain the response of the coupler, and to illustratively understand the working mechanism of the proposed structure. A coupler is designed to work at 5.5 GHz. Leaky mode results are compared with three-dimensional finite-element method simulations, showing the validity and accuracy of the new theory developed. This novel directional coupler presents interesting advantages when compared to previous wave couplers
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