Planar magnetoinductive wave transducers : theory and applications
Freire, M. J. (Universidad de Sevilla. Departamento de Electrónica y Electromagnetismo)
Marqués, R. (Universidad de Sevilla. Departamento de Electrónica y Electromagnetismo)
Medina, F. (Universidad de Sevilla. Departamento de Electrónica y Electromagnetismo)
Laso, M. A. G. (Universidad Pública de Navarra. Departamento de Ingeniería Eléctrica, Electrónica y de Comunicación)
Martín, Ferran, (Martín Antolín) (Universitat Autònoma de Barcelona. Departament d'Enginyeria Electrònica)
American Physical Society

Date:	2004
Abstract:	Transduction of magnetoinductive waves (MIWs) in planar technology is demonstrated. A transducer consisting of a one-dimensional periodic array of metallic split squared ring resonators (SSRR), placed between a pair of microstrip lines on a planar substrate has been fabricated and measured. The microstrip lines are inductively coupled to the SSRRs located at the ends of the periodic array and excite MIWs that propagate along the array. The theoretical model for the dispersion of MIWs is used to predict the dispersion relation and the delay time in the device. The delay time was measured and a good agreement was found with the theoretical predictions. The transmission coefficient of the device was also measured. The theoretical and experimental results suggest that the proposed configuration can find application in the design of delay lines and other microwave devices. In fact, the behavior of the proposed transducer is similar to that of the conventional ferritemagnetostatic-wavetransducer. However, ferrite devices are fragile, difficult to integrate, and require a heavy external magnet or electromagnet to magnetize the ferrite to saturation. Since all these drawbacks are not present in the proposed configuration, it may be a useful alternative to those devices for many practical applications.
Rights:	Tots els drets reservats.
Language:	Anglès
Document:	Article ; recerca ; Versió publicada
Subject:	Transducers ; Microwaves ; Inductance ; Dispersion relations ; Ferrites ; Radiowave and microwave technology ; Transmission coefficient ; Coupled resonators ; Magnets ; Saturation moments
Published in:	Applied physics letters, Vol. 85, Issue 19 (November 2004) , p. 4439-4441, ISSN 1077-3118

DOI: 10.1063/1.1814428

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