Use este identificador para citar ou linkar para este item: http://www.repositorio.ufc.br/handle/riufc/2178
Título: Bulk and patch ferrite resonator antennas based on the ceramic matrix composite: GdIGx YIG1-x.
Autor(es): Fechine, Pierre Basílio Almeida
Almeida, Ana Fabíola Leite
Oliveir, R. S.
Moretzsohn, Ricardo Sávio Teixeira
Sombra, Antonio Sergio Bezerra
Palavras-chave: Materiais
Antenas
Microondas
Data do documento: 2009
Editor: Microwave and Optical Technology Letters
Citação: FECHINE, P. B. A. ; ALMEIDA, A. F. L. ; OLIVEIR, R. S. ; MORETZSOHN, R. S. T ; SOMBRA, A. S. B. (2009)
Abstract: In this study, the dielectric properties of the GdIGXYIG1–X ferrite composite material at radio frequency (RF) and microwave frequency bands were studied. These measurements were carried out in different sample geometries: thick films and cylindrical ceramic bulk ferrite resonator. In the RF range, we observed that the material is rather stable because of its short changes as a function of temperature and frequency range. The temperature capacitance coefficient values for all the samples (thick films and cylindrical ceramic bulk samples) presented short positive values at the RF range. The GdIG0.5YIG0.5 thick film was used as a substrate for the microstrip antenna device, where the upper Ag electrode served as a circular patch antenna and a microstrip line was used as a feed line. The microstrip antenna operates in this configuration at 8.185 GHz. In the study of the dielectric properties of the composites antenna geometry, with the same ferrite composite, a bulk cylindrical geometry was investigated. A numerical study, together with the experimental, was done, and the dielectric characteristics of the composite like were obtained.
Descrição: FECHINE, P. B. A. ; ALMEIDA, A. F. L. ; OLIVEIR, R. S. ; MORETZSOHN, R. S. ; SOMBRA, A. S. B. Bulk and patch ferrite resonator antennas based on the ceramic matrix composite: GdIGx YIG1-x. Microwave and Optical Technology Letters, v. 51, p. 1595-1602, 2009.
URI: http://www.repositorio.ufc.br/handle/riufc/2178
ISSN: 0895-2477
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