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Study of a microwave ferrite resonator antenna, based on a ferrimagnetic composite (Gd3Fe5O12)GdIGX–(Y3Fe5O12)YIG1−X

Study of a microwave ferrite resonator antenna, based on a ferrimagnetic composite (Gd3Fe5O12)GdIGX–(Y3Fe5O12)YIG1−X

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  • Author(s): P.B.A. Fechine 1 ; H.H.B. Rocha 2 ; R.S.T. Moretzsohn 2 ; J.C. Denardin 3 ; R. Lavín 4 ; A.S.B. Sombra 2
    • View affiliations
    • Affiliations: 1: Departamento de Química Analítica e Físico-Química, Universidade Federal do Ceará – UFC, Fortaleza, Brazil
      2: Laboratório de Telecomunicações e Ciência e Engenharia dos Materiais - (LOCEM), Departamento de Física, Universidade Federal do Ceará, Fortaleza, Ceará, Brazil
      3: Departamento de Física, Universidad de Santiago de Chile, USACH, Santiago, Chile
      4: Facultad de Ingeniería, Universidad Diego Portales, Santiago, Chile
  • Source: Volume 3, Issue 8, December 2009, p. 1191 – 1198
    DOI:  10.1049/iet-map.2008.0301 , Print ISSN 1751-8725, Online ISSN 1751-8733
© The Institution of Engineering and Technology
Published

The authors report a study on microwave properties of a ferrimagnetic ceramic composite (Gd3Fe5O12)GdIGX–(Y3Fe5O12)YIG1−X. The magnetic and dielectric measurements at microwave frequency were made through the Hakki–Coleman's procedure and through the excitation of a cylindrical ferrite resonator antenna (FRA). The hysteresis loops of the GdIGXYIG1−X ferrimagnetic composite were obtained. The numerical simulation study was performed using Ansoft's High Frequency Structure Simulator (HFSS™) software. The agreement between the experimental data and the simulated results is very good. These results demonstrated that, by varying the material composition of the resonator, ferrimagnetic composite GdIGXYIG1−X could operate as a magneto-dielectric antenna with bandwidth in the range of 7.5–11% and in the frequency range of 4.4–5.3 GHz. Additionally, all FRAs presented a low negative value of τf, which indicates suitability for microwave applications such as mobile communication systems or satellite broadcast systems.

Inspec keywords: yttrium compounds; dielectric resonator antennas; dielectric hysteresis; gadolinium compounds; microwave antennas

Other keywords: ferrimagnetic ceramic composite; Gd3Fe5O12-Y3Fe5O12; microwave ferrite resonator antenna

Subjects: Single antennas; Other dielectric applications and devices

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