Microwave non-reciprocal coplanar directional coupler based on ferrite materials

Youcef Hadj Aissa Fekhar, Faouzi Salah-Belkhodja, Didier Vincent, Enrique Bronchalo, Wassila Tebboune and Rafah Naoum

Journal of Electromagnetic Waves and Applications, 2020, vol. 34, issue 5, 623-633

Abstract: Magnetized ferrites are anisotropic materials used in passive non-reciprocal components. One of the main applications of ferrites at microwave frequencies is the isolation effect. In this work, the non-reciprocal propagation in a ferrite coplanar coupler is studied from simulation results. The proposed structure exhibits a low insertion loss less than 1 dB, and return loss better than 20 dB, with significant non-reciprocal behavior for through propagation. The design of the non-reciprocal coplanar coupler, based on a magnetized transversally ferrite as substrate dielectric material, is presented. The numerical study allows to describe the component physical behavior. As results, a miniature coupler at 12.50 GHz with a non-reciprocal effect in direct access is better than 35 dB has been designed and simulated.

Date: 2020
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DOI: 10.1080/09205071.2020.1733102

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