Optimization of Microwave Dielectric Properties of (100-X)BaBi4Ti4O15 - (X)Nb2O5 Composites for Microwave

被引：0

作者：

Silva, Paulo M. O. ^{[1
]}

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

Nogueira, Francisco E. A. ^{[1
,2
]}

do Nascimento, Joao P. C. ^{[1
,3
]}

Freitas, Daniel B.

do Carmo, Francisco F. ^{[1
]}

Silva, Marcelo A. S. ^{[1
]}

Cruz, Jose A. ^{[4
]}

Pezarini, Rogerio R. ^{[4
]}

Tavares, Joao Manuel R. S. ^{[5
]}

Sombra, Antonio S. B. ^{[1
]}

机构：

[1] Fed Univ Ceara UFC, Telecommun & Mat Sci & Engn Lab LOCEM, Phys Dept, BR-60440900 Fortaleza, Ceara, Brazil

[2] Fed Univ Ceara UFC, Telecommun Engn Dept, BR-60440900 Fortaleza, Ceara, Brazil

[3] Fed Inst Educ Sci & Technol Ceara, BR-60055172 Fortaleza, Ceara, Brazil

[4] Univ Estadual Maringa, Dept Environm, BR-87020900 Umuarama, Parana, Brazil

[5] Univ Porto, Mech Engn Dept, P-4200465 Porto, Portugal

来源：

PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE | 2025年 / 222卷 / 11期

关键词：

BaBi4Ti4O15-Nb2O5; dielectric resonator antenna; microwave; simulation; CRYSTAL-STRUCTURE; ELECTRICAL-PROPERTIES; RESONATOR ANTENNAS; CERAMICS; TEMPERATURE; STABILITY; FREQUENCY; DESIGN; MATRIX;

D O I：

10.1002/pssa.202400831

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This study focuses on experimental investigations and numerical simulations of microwave dielectric properties and dielectric resonator antenna behavior based on the BaBi4Ti4O15 ceramic matrix. BaBi4Ti4O15 is doped with niobium oxide (Nb2O5) in proportions of 2, 5, and 10%. The ceramic is obtained through the solid-state reaction method. The resulting structures and dielectric properties of the samples are analyzed using powder X-ray diffraction, Raman spectroscopy, and scanning electron microscopy to examine the crystalline phases present in the ceramics. The Hakki-Coleman method is used to clarify the properties of permittivity and dielectric loss. The temperature coefficients of the resonant frequency (tau(f)) range from -396.95 to -181.44 ppm degrees C-1. Experimental measurements of the dielectric resonators, serving as antennas, yielded results such as reflection coefficient, gain, efficiency, bandwidth, and input impedance. The simulations aligned well with experimental results, suggesting the potential application of this material as an antenna device in the microwave spectrum.

引用

页数：12

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