Improvement of Microwave Absorbance of Polymer Composites of W-Type Hexaferrite Powders by Attachment of Frequency Selective Surface

• Autorzy: Cho H.-S. , Kim S.-S.

Identyfikatory

DOI

10.1515/amm-2017-0202

• Języki publikacji: EN

Abstrakty

EN

This work investigates the effect of a frequency selective surface (FSS) composed of a regular array of square loop elements on the absorption properties of grounded ferrite composites. Polymer matrix composites of CoZnW hexaferrite powders having small magnetic loss were used as the substrate material. Computational tools were used to model the interaction between electromagnetic waves and materials and determine the reflection coefficient. Reflection loss and bandwidth were greatly improved by attaching an FSS with controlled electrical resistance (R) onto the grounded ferrite composites. For the FSS with R = 800 Ω, the minimum reflection loss decreased to –25 dB at 10 GHz and the bandwidth was broadened to 7.5-12.5 GHz with respect to –10 dB reflection loss.

Słowa kluczowe

EN

frequency selective surface; microwave absorbers; hexaferrite powders; polymer composites

• Wydawca: Institute of Metallurgy and Materials Science of Polish Academy of Sciences ; Committee of Materials Engineering and Metallurgy of Polish Academy of Sciences
• Czasopismo: Archives of Metallurgy and Materials
• Rocznik: 2017
• Tom: Vol. 62, iss. 2B
• Strony: 1325--1328
• Opis fizyczny: Bibliogr. 13 poz., rys., wzory

Twórcy

autor

Cho H.-S.

• Department of Advanced Materials Engineering, Chungbuk National University, Cheongju 361-763, Korea

autor

Kim S.-S.

• Department of Advanced Materials Engineering, Chungbuk National University, Cheongju 361-763, Korea

Bibliografia

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Uwagi

PL

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę (zadania 2017)