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

  • José Luis Gómez-Tornero /
  • Sofia Martínez-López /
  • Alejandro álvarez-Melcón
Journal ar
IEEE Transactions on Microwave Theory and Techniques
  • Volumen: 54
  • Número: 9
  • Fecha: 01 September 2006
  • Páginas: 3534-3541
  • ISSN: 00189480
  • Source Type: Journal
  • DOI: 10.1109/TMTT.2006.879773
  • Document Type: Article
This paper presents a new theory to analyze and design a novel leaky-wave coupler based on a hybrid dielectric-wave-guide 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. © 2006 IEEE.

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