Title :
Simple Analysis and Design of a New Leaky-Wave Directional Coupler in Hybrid Dielectric-Waveguide Printed-Circuit Technology
Author :
Gómez-Tornero, José Luis ; Martínez-López, Sofía ; Alvarez-Melcon, Alejandro
Author_Institution :
Polytech. Univ. of Cartagena
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
Keywords :
dielectric waveguides; directional couplers; finite element analysis; geometrical optics; method of moments; microwave circuits; printed circuit design; 5.5 GHz; finite-element method; geometrical optics; hybrid dielectric waveguide; leaky-wave directional coupler; method of moments; printed-circuit technology; propagation constant; Coupling circuits; Dielectrics; Directional couplers; Finite element methods; Geometrical optics; Gratings; Moment methods; Optical waveguides; Paper technology; Propagation constant; Directional coupler; geometrical optics (GO); leaky waves; method of moments (MoM);
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
DOI :
10.1109/TMTT.2006.879773
