Dielectric characterisation and numerical investigation of SrBi2Nb2O9-Bi2O3composites for applications in microwave range

被引：11

作者：

Abreu, R. F. ^{[1
,2
]}

Saturno, S. O. ^{[1
,2
]}

do Nascimento, J. P. C. ^{[2
,3
]}

Sancho, E. O. ^{[4
]}

de Morais, J. E., V ^{[2
]}

Sales, J. C. ^{[2
,5
]}

Gouveia, D. X. ^{[2
,3
]}

de Andrade, H. D. ^{[6
]}

Queiroz Junior, I. S. ^{[6
]}

Sombra, A. S. B. ^{[2
,6
]}

机构：

[1] Fed Univ Ceara UFC, Telecommun Engn Dept, BR-60755640 Fortaleza, Ceara, Brazil

[2] Fed Univ Ceara UFC, Phys Dept, LOCEM Telecommun & Mat Sci & Engn Lab LOCEM, BR-60455760 Fortaleza, Ceara, Brazil

[3] Inst Fed Educ Ciencia & Tecnol, PPGET, Fortaleza, Ceara, Brazil

[4] Univ Fortaleza UNIFOR, Dept Mech Engn, Fortaleza, Ceara, Brazil

[5] Univ Estadual Vale Acarau, Ctr Ciencias Exatas & Tecnol, Dept Engn Civil, Sobral, Brazil

[6] Fed Univ Semiarid Reg, UFERSA, Mossoro, Brazil

来源：

JOURNAL OF ELECTROMAGNETIC WAVES AND APPLICATIONS | 2020年 / 34卷 / 12期

关键词：

SrBi2Nb2O9; microwaves; solid-state reaction; dielectric resonator antennas; RESONATOR ANTENNAS; GAP;

D O I：

10.1080/09205071.2020.1787231

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

We present a study of the dielectric properties and behaviour of dielectric resonator antennas (DRAs) based on SrBi2Nb2O9(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 Bi2O3. The temperature coefficient of resonant frequency (tau(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/degrees C. For the dielectric properties, it is observed that Bi(2)O(3)additions cause the formation of new phases, which present higher dielectric epsilon' 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.

引用

页码：1705 / 1718

页数：14

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