Microstrip ring resonators applied to ferrite material (YIG) characterization in microwave frequency bands

¹ Faculté des sciences, Département de physique, Université setif 1, Setif 19000, Algeria
² Université de Lyon, 42023 Saint-Etienne, France
³ Université de Saint-Etienne, Jean Monnet, 42000 Saint-Etienne, France
⁴ LT2C, 42000 Saint-Etienne, France

^a e-mail: Didier.Vincent@univ-st-etienne.fr

Received: 18 March 2014
Revised: 30 June 2014
Accepted: 15 July 2014
Published online: 20 August 2014

Abstract

Microstrip ring resonator (MSRR) is an efficient technique for electromagnetic material characterization in microwave bands. Ferrites constitute important class of materials for microwave devices, especially for RF passive components. The aim of the work was to characterize ferrite materials using the frequency response of MSRRs. A theoretical analysis of the problem has been developed to find a relation between the ring resonance frequencies and the electromagnetic properties of ferrite such as effective permittivity and permeability. The measurements made on YIG (101) from 1 to 30 GHz are found to be in good agreement with the theoretical results. And the MSRR technique applied on ferrite materials has been validated.