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Dielectric resonator antenna: Operation of the magnetodielectric composites Cr 0.75 Fe 1.25 O 3 (CRFO)/Fe 0.5 Cu 0.75 Ti 0.75 O 3 (FCTO)
Author(s) -
Rocha H. H. B.,
Freire F. N. A.,
Costa R. C. S.,
Sohn R. S. T. M.,
Orjubin G.,
Junqueira C.,
Cordaro T.,
Sombra A. S. B.
Publication year - 2007
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.22160
Subject(s) - dielectric resonator antenna , materials science , dielectric , microwave , resonator , return loss , composite material , dielectric resonator , dielectric loss , bandwidth (computing) , antenna (radio) , electrical engineering , optoelectronics , engineering , telecommunications
The probe‐feed cylindrical dielectric resonator antennas (DRA) based on a new magnetodielectric composites Cr 0.75 Fe 1.25 O 3 (CRFO)/Fe 0.5 Cu 0.75 Ti 0.75 O 3 (FCTO) are investigated. The experimental and theoretical characteristics of the antenna like return loss, bandwidth, input impedance, and radiation patterns are in good agreement. Numerical validation is done, tacking into account the air gaps between the dielectric resonator and the metallic conductors. Frequency response bandwidth in the range of 6.6–11.8% was obtained for frequency operation around 4 GHz. The CRFO‐FCTO present a dielectric constant in the range of 8–13 with loss around 10 −3 . To summarize, the performance of a cylindrical DRA based in a new matrix CRFO/FCTO was examined. These measurements confirm the potential use of such materials for small DRA. © 2006 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 409–413, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22160