Transmission Attenuation Evaluation of Noise Suppression Sheet for 5G and Beyond

Article Engineering, Electrical & Electronic

Estimation of Noise Suppression in MSL With Co-Zr-Nb Film Considering Impedance Matching

Takahiro Mikami et al.

Summary: An equivalent electrical circuit of a microstrip line with a magnetic film is proposed in this study. The method to estimate its circuit parameters is investigated to provide design guidelines for noise suppression sheets (NSS) placed on traces in electronic devices. The complex permeability of the magnetic film is analyzed to understand its effect on circuit parameters. A microstrip line with a Co-Zr-Nb film is designed as a test bench, and its transmission coefficients and conducted noise suppression are estimated. Results show that the proposed equivalent circuit has the potential to accurately estimate circuit parameters and transmission characteristics of microstrip lines with magnetic films, and can be used to guide the design of NSS on traces in electronic devices.

IEEE TRANSACTIONS ON MAGNETICS (2022)

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Article Chemistry, Physical

Development of an alternative approach for electromagnetic wave absorbers using Fe-Cr-Co alloy powders

Saijian Ajia et al.

Summary: The alternative application of Fe-Cr-Co magnetic alloys as microwave absorption materials was investigated. Composite samples of Fe-25Cr-12Co powder with resin were prepared and their microwave absorption properties in the gigahertz (GHz) band were evaluated. It was found that the complex permeability of the composites could be adjusted by the final aging temperature, showing potential advantages for microwave absorption applications in the GHz frequency range.

JOURNAL OF ALLOYS AND COMPOUNDS (2022)

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Article Materials Science, Multidisciplinary