Idioma:

Dielectric characterisation and numerical investigation of SrBi2Nb2O9-Bi2O3 composites for applications in microwave range

Abreu, R. F. ; Saturno, S. O. ; do Nascimento, J. P. C. ; Sancho, E. O. ; de Morais, J. E. V. ; Sales, J. C. ; Gouveia, D. X. ; de Andrade, H. D. ; Queiroz Júnior, I. S. ; Sombra, A. S. B.

Journal of electromagnetic waves and applications, 2020-08, Vol.34 (12), p.1705-1718 [Periódico revisado por pares]

Texto completo disponível

Citações Citado por

Título:
Dielectric characterisation and numerical investigation of SrBi2Nb2O9-Bi2O3 composites for applications in microwave range
Autor: Abreu, R. F. ; Saturno, S. O. ; do Nascimento, J. P. C. ; Sancho, E. O. ; de Morais, J. E. V. ; Sales, J. C. ; Gouveia, D. X. ; de Andrade, H. D. ; Queiroz Júnior, I. S. ; Sombra, A. S. B.
Assuntos: dielectric resonator antennas ; microwaves ; solid-state reaction ; SrBi
É parte de: Journal of electromagnetic waves and applications, 2020-08, Vol.34 (12), p.1705-1718
Descrição: We present a study of the dielectric properties and behaviour of dielectric resonator antennas (DRAs) based on SrBi 2 Nb 2 O 9 (SBN)-Bi 2 O 3 composites. X-ray diffraction is used for structural characterisation of the samples and it indicates the formation of a new phase after the addition of Bi 2 O 3 . The temperature coefficient of resonant frequency (τ f ) is measured and the results demonstrate that the increment of Bi 2 O 3 improves the thermal stability of the composites from −345.62 to −235.02 ppm/°C. For the dielectric properties, it is observed that Bi 2 O 3 additions cause the formation of new phases, which present higher dielectric ϵ' than SBN. Our numerical simulations show that the materials operate as DRAs and that SBN-Bi 2 O 3 composites could be potential candidates for DRAs operating in the S band.
Editor: Taylor & Francis
Idioma: Inglês

Voltar para lista de resultados