Title :
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
fDate :
9/1/1999 12:00:00 AM
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/√(εrμr) and a resonant frequency shift depending on tan δμ, where εr and μr 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;
Journal_Title :
Magnetics, IEEE Transactions on
