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Microwave dielectric properties study of (Al 2 O 3 )‐(Nb 2 O 5 ) composite for dielectric resonator antenna applications
Author(s) -
Oliveira L. N. L.,
Campos R. V. B.,
Gouveia D. X.,
Silva M. A. S.,
Sombra A. S. B.
Publication year - 2016
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.29816
Subject(s) - materials science , dielectric , microwave , niobium , dielectric spectroscopy , dielectric resonator , dielectric resonator antenna , composite number , resonator , niobium oxide , antenna (radio) , analytical chemistry (journal) , optoelectronics , composite material , electrical engineering , telecommunications , physics , electrode , chemistry , metallurgy , engineering , quantum mechanics , chromatography , electrochemistry
ABSTRACT This work presents results of a study of the alumina‐niobium oxide composite (Al 2 O 3 )‐(Nb 2 O 5 ) dielectric properties in the radio frequency and microwave range. The characterization study was performed in a matrix of alumina by varying the amount of niobium oxide (2.5%–10% by weight. amount). The samples were sintherized at the temperature of 1350°C. The dielectric properties in the RF range were studied by impedance spectroscopy. The Hakki–Coleman method was adopted for measuring microwave properties. Besides a computer simulation was performed in order to characterize the material as a dielectric resonator antenna. © 2016 Wiley Periodicals, Inc. Microwave Opt Technol Lett 58:1473–1479, 2016