Measuring complex permeability of ferromagnetic thin films using non-50 Ω shorted microstrip method

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Measuring complex permeability of ferromagnetic thin films using non-50 Ω shorted microstrip method

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A non-50 Ω shorted microstrip method is proposed to measure the complex permeability of ferromagnetic thin film. The proposed method, using a higher characteristic impedance microstrip, achieves a more compact fixture structure and can be applied to a higher operation frequency. The experimental results show that, assuming the discontinuity effect between the coaxial-microstrip connector and the microstrip, the permeability measured using the non-50 Ω shorted microstrip method agrees excellently with that measured using the 50 Ω shorted microstrip method.

Inspec keywords: magnetic thin films; magnetic permeability measurement; microstrip components

Other keywords: resistance 50 ohm; complex permeability measurement; ferromagnetic thin films; nonshorted microstrip method; higher characteristic impedance microstrip; coaxial-microstrip connector

Subjects: Magnetic variables measurement; Waveguide and microwave transmission line components

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