Multi-Frequency Resonant Measurements of the Complex Permittivity and Initial Permeability of Barium Ferrite Ceramic
2023 IEEE/MTT-S International Microwave Symposium - IMS 2023(2023)
Abstract
The complex permittivity and complex initial permeability of barium ferrite ceramic rods have been measured at multiple frequencies in the 4-18 GHz range employing a cylindrical TM
0n0
mode cavity and five different TE011 dielectric resonators. The imaginary parts were found to be in the 10
-4
– 10
-3
range, which is much lower than those given in literature data, apparently due to limited resolution of transmission/reflection methods. The obtained results are well-described by a two-resonance permeability model.
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Key words
ferrite,barium compounds,permeability measurement,dielectric loss,magnetic loss,cavity resonators
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