Microwave non-reciprocal coplanar directional coupler based on ferrite materials

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.

KEYWORDS:

• Non-reciprocal coupler
• ferrite coupled line coupler (FCLC)
• coplanar waveguides (CPWs)
• YIG

Correction Statement

This article has been republished with minor changes. These changes do not impact the academic content of the article.

Additional information

Funding

This work was supported by the Directorate-General for Scientific Research and Technological Development (DGRSDT).

Notes on contributors

Youcef Hadj Aissa Fekhar

Youcef Hadj Aissa Fekhar received the M.Sc. degree (Dip.Ing) from Amar Telidji University, Laghouat, Algeria, the diploma in electronic “communications”, and Magister degree from Djillali Liabes University of Sidi Bel Abbes, Algeria in optical communications and microwaves, in 2007 and 2011, respectively. He is currently a Ph.D. student at Djillali Liabes University. His current research interests include passive microwave components, and non-reciprocal devices based on ferrite materials.

Faouzi Salah-Belkhodja

Faouzi Salah-Belkhodja received the diploma of Electronic Engineering from the university of science, and Technology, Oran, Algeria in 1982, the diploma in “Telecommunications Optics and Microwaves”, the PhD degree in microwaves from University of Limoges, France and the Thèse d'etat from the Sidi Bel Abbes University, Algeria, in 1985, 1988, 2001 respectively. Since 1988, he is at the Dept of Electronics, where he is a professor in Electronic Department in Djillali Liabes University of Sidi Bel Abbes. His research interests include photonic integration, photonic networking, optical communications and microwaves.

Didier Vincent

Didier Vincent was born in France, in 1959. He received the Ph.D. degree in electronics from the University of Saint-Etienne, France, in 1995. He is currently a Full Professor at the University of Saint-Etienne and his research activities concern the integration of magnetic microwave components and the Characterization methods on magnetic materials in the microwave range.

Enrique Bronchalo

Enrique Bronchalo received the M.Sc. degree in physics from the Universidad Complutense de Madrid, Madrid, Spain, and the Ph.D. degree in physics from the Universidad de Alcalá, Alcalá de Henares, Spain. He is an Associate Professor with Miguel Hernández University, Elche, Spain. His current research interests include passive microwave devices, power effects in waveguides, and measurement of material properties at microwave frequencies.

Wassila Tebboune

Wassila Tebboune received the Diploma Master in 2002, and she is a Ph.D. student working especially on magnetic properties of ferrite materials, the dielectric layers, and non-reciprocal effect in ferrites.

Rafah Naoum

Rafah Naoum received the M.Sc. degree (Dipl. Ing.) from the University of science, and Technology, Oran, Algeria in 1983, The diploma in ‘Telecommunications optics and Microwave’ the Ph.D. degree in integrated optics from the University of Limoges (France) and the second Ph.D. degree from University of Sidi Bel Abbes, Algeria, in 1984, 1987, 1999, respectively. His main interests included optical communications, antennas, and integrated optical devices.