Scalar permeability measurements of microwave ferrites using lumped circuit, coaxial line, and resonance techniques

Jerzy Krupka , J. Rogowski , J Baker-Jarvis , R Geyer

Abstract

Complex scalar permeability measurement results of microwave ferrites at frequencies from 1 Hz to 20 GHz are presented. Three different techniques were used to perform the measurements. The method chosen depended on frequency and magnetic loss. At low frequencies, 1-10 5 Hz, we applied lumped parameter circuit techniques. With this technique nonlinear permeability effects were measured. At higher frequencies, from 1 MHz up to gyromagnetic resonance, coaxial transmission line techniques were used. At frequencies above gyromagnetic resonance, a dielectric ring resonator technique was used. By combining all three methods, the real and imaginary parts of sample permeability, with magnetic loss factors that vary from 10-5 to 102, may be measured. In addition, nonlinear effects in ferrite materials and saturation magnetization may be evaluated
Author Jerzy Krupka IMiO
Jerzy Krupka,,
- The Institute of Microelectronics and Optoelectronics
, J. Rogowski
J. Rogowski,,
-
, J Baker-Jarvis
J Baker-Jarvis,,
-
, R Geyer
R Geyer,,
-
Pages701-704 vol.3
Book , 12th International Conference on Microwaves and Radar, 1998. MIKON '98, vol. 3, 1998
Keywords in English1 Hz to 20 GHz, coaxial line, coaxial waveguides, dielectric loss measurement, dielectric measurements, dielectric resonators, dielectric ring resonator, ferrites, frequency, gyromagnetic resonance, Gyromagnetism, lumped circuit, magnetic leakage, magnetic loss, Magnetic losses, magnetic permeability measurement, Magnetic Resonance Imaging, magnetisation, microwave ferrites, microwave materials, microwave measurement, nonlinear effects, nonlinear permeability effects, Permeability measurement, resonance techniques, Saturation magnetization, scalar permeability measurements, Transmission line measurements
DOIDOI:10.1109/MIKON.1998.742808
Score (nominal)1
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