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ANALYSIS AND DESIGN OF AN ULTRA WIDEBAND DIRECTIONAL COUPLER

By M. Nedil and T. A. Denidni

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Abstract:
In this paper, a novel wideband directional coupler using coplanar waveguide multilayer slot-coupled technique is presented and implemented. The coupler uses two coplanar waveguide lines etched on two layers and coupled through an hexagonal slot etched on the common ground plane located between these layers. Firstly, conformal mapping techniques were used to obtain analytic closed-form expressions for the even- and odd-mode characteristic impedances. Secondly, using this approach, a new design of the directional coupler was performed. Both simulation and experimental results show a good performance in terms of bandwidth.

Citation: (See works that cites this article)
M. Nedil and T. A. Denidni, "Analysis and Design of an Ultra Wideband Directional Coupler," Progress In Electromagnetics Research B, Vol. 1, 291-305, 2008.
doi:10.2528/PIERB07110704

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