Broad Band Electromagnetic Absorption of Flexible Foils in the Microwave Range

Foils filled with conductive and magnetic materials are developed for absorption of microwaves. The foils have a thickness of 0.5 - 1.5 mm and a basic composition of 25 wt.% polyethylene, 9 wt.% carbon, and 66 wt.% inorganic filler of very different nature. The absorbed power is determined from meas...

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Bibliographic Details
Published in2007 IEEE International Symposium on Electromagnetic Compatibility pp. 1 - 5
Main Authors Gornert, P., Payer, P., Surzhenko, O., Michalowsky, L., Heegn, H., Madai, E., Langer, M.
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.07.2007
Subjects
Amorphous magnetic materials
Conducting materials
Dielectric materials
Electromagnetic wave absorption
Frequency measurement
Magnetic materials
Organic materials
Permeability
Permittivity
Power measurement
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Summary:Foils filled with conductive and magnetic materials are developed for absorption of microwaves. The foils have a thickness of 0.5 - 1.5 mm and a basic composition of 25 wt.% polyethylene, 9 wt.% carbon, and 66 wt.% inorganic filler of very different nature. The absorbed power is determined from measurements of reflection and transmission with a closed coaxial measuring technique in the frequency range of 40 MHz to 1 GHz. Transmission measurements are carried out from 700 MHz - 18 GHz and 50 - 75 GHz. Foils with thicknesses of about 1 mm absorb more than 30% of the incident power.
ISBN:1424413494
9781424413492
ISSN:2158-110X
2158-1118
DOI:10.1109/ISEMC.2007.214