Fabrications of broad-band RF-absorber composed of planar hexagonal ferrites

Author

Inui, Tetsuji ; Konishi, Kouichi ; Oda, Kiichi

Author_Institution

Int. Centre for Mater. Res., Kawasaki, Japan

Volume

35

Issue

5

fYear

1999

fDate

9/1/1999 12:00:00 AM

Firstpage

3148

Lastpage

3150

Abstract

Single-layer absorbers composed of sintered planar hexagonal ferrites were developed. The absorbers have 50~90% relative bandwidth at microwave frequencies. The broadband characteristics were successfully analyzed by a quarter-wavelength resonator model, which took into account both a wavelength reduction due to 1/√(ε_rμ_r) and a resonant frequency shift depending on tan δ_μ, where ε_r and μ_r are relative permittivity and permeability, respectively, for the resonator material

Keywords

electromagnetic compatibility; electromagnetic wave absorption; ferrite devices; magnetic microwave devices; magnetic permeability; microwave materials; sintering; Mg₂Y ferrites; broadband RF absorber; broadband characteristics; fabrication; microwave frequencies; planar hexagonal ferrites; quarter-wavelength resonator model; resonant frequency shift; single-layer absorbers; sintered ferrites; wavelength reduction; Electromagnetic scattering; Fabrication; Ferrites; Magnetic materials; Microwave frequencies; Millimeter wave technology; Permeability; Permittivity; Resonance; Rubber;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.801110

Filename

801110