On the feasibility of using ferromagnetic materials for thin EM absorbers

J. Ramprecht; Daniel Sjöberg

doi:10.1109/ICEAA.2007.4387303

On the feasibility of using ferromagnetic materials for thin EM absorbers

J. Ramprecht, Daniel Sjöberg

Department of Electrical and Information Technology

Research output: Chapter in Book/Report/Conference proceeding › Paper in conference proceeding › peer-review

Abstract

In this paper the magnetization of a ferro-or ferri-magnetic material has been modeled with the Landau-Lifshitz-Gilbert (LLG) equation. We show that with the aid of a static magnetic bias field the material can be switched between a Lorentz-like material with a resonance frequency and a material exhibiting a magnetic conductivity. The reflection from a magnetic material backed by a perfect electrical conductor (PEC) is then analyzed. It is found that one can achieve low reflection (around -20 dB) for a quite large bandwidth (more than two decades).

Original language	English
Title of host publication	Proceedings of the International Conference on Electromagnetics in Advanced Applications, 2007
Publisher	IEEE - Institute of Electrical and Electronics Engineers Inc.
Pages	324-327
Number of pages	4
ISBN (Print)	978-1-4244-0767-5
DOIs	https://doi.org/10.1109/ICEAA.2007.4387303
Publication status	Published - 2007
Event	International Conference on Electromagnetics in Advanced Applications (ICEAA), 2007 - Torino, Italy Duration: 2007 Sept 17 → 2007 Sept 21

Conference

Conference	International Conference on Electromagnetics in Advanced Applications (ICEAA), 2007
Country/Territory	Italy
City	Torino
Period	2007/09/17 → 2007/09/21

Subject classification (UKÄ)

Electrical Engineering, Electronic Engineering, Information Engineering

Access to Document

10.1109/ICEAA.2007.4387303

Cite this

@inproceedings{07021046b32f4498b5a50f98e06ee692,

title = "On the feasibility of using ferromagnetic materials for thin EM absorbers",

abstract = "In this paper the magnetization of a ferro-or ferri-magnetic material has been modeled with the Landau-Lifshitz-Gilbert (LLG) equation. We show that with the aid of a static magnetic bias field the material can be switched between a Lorentz-like material with a resonance frequency and a material exhibiting a magnetic conductivity. The reflection from a magnetic material backed by a perfect electrical conductor (PEC) is then analyzed. It is found that one can achieve low reflection (around -20 dB) for a quite large bandwidth (more than two decades).",

author = "J. Ramprecht and Daniel Sj{\"o}berg",

year = "2007",

doi = "10.1109/ICEAA.2007.4387303",

language = "English",

isbn = "978-1-4244-0767-5",

pages = "324--327",

booktitle = "Proceedings of the International Conference on Electromagnetics in Advanced Applications, 2007",

publisher = "IEEE - Institute of Electrical and Electronics Engineers Inc.",

address = "United States",

note = "International Conference on Electromagnetics in Advanced Applications (ICEAA), 2007 ; Conference date: 17-09-2007 Through 21-09-2007",

}

Ramprecht, J & Sjöberg, D 2007, On the feasibility of using ferromagnetic materials for thin EM absorbers. in Proceedings of the International Conference on Electromagnetics in Advanced Applications, 2007. IEEE - Institute of Electrical and Electronics Engineers Inc., pp. 324-327, International Conference on Electromagnetics in Advanced Applications (ICEAA), 2007, Torino, Italy, 2007/09/17. https://doi.org/10.1109/ICEAA.2007.4387303

On the feasibility of using ferromagnetic materials for thin EM absorbers. / Ramprecht, J.; Sjöberg, Daniel.
Proceedings of the International Conference on Electromagnetics in Advanced Applications, 2007. IEEE - Institute of Electrical and Electronics Engineers Inc., 2007. p. 324-327.

Research output: Chapter in Book/Report/Conference proceeding › Paper in conference proceeding › peer-review

TY - GEN

T1 - On the feasibility of using ferromagnetic materials for thin EM absorbers

AU - Ramprecht, J.

AU - Sjöberg, Daniel

PY - 2007

Y1 - 2007

N2 - In this paper the magnetization of a ferro-or ferri-magnetic material has been modeled with the Landau-Lifshitz-Gilbert (LLG) equation. We show that with the aid of a static magnetic bias field the material can be switched between a Lorentz-like material with a resonance frequency and a material exhibiting a magnetic conductivity. The reflection from a magnetic material backed by a perfect electrical conductor (PEC) is then analyzed. It is found that one can achieve low reflection (around -20 dB) for a quite large bandwidth (more than two decades).

AB - In this paper the magnetization of a ferro-or ferri-magnetic material has been modeled with the Landau-Lifshitz-Gilbert (LLG) equation. We show that with the aid of a static magnetic bias field the material can be switched between a Lorentz-like material with a resonance frequency and a material exhibiting a magnetic conductivity. The reflection from a magnetic material backed by a perfect electrical conductor (PEC) is then analyzed. It is found that one can achieve low reflection (around -20 dB) for a quite large bandwidth (more than two decades).

U2 - 10.1109/ICEAA.2007.4387303

DO - 10.1109/ICEAA.2007.4387303

M3 - Paper in conference proceeding

SN - 978-1-4244-0767-5

SP - 324

EP - 327

BT - Proceedings of the International Conference on Electromagnetics in Advanced Applications, 2007

PB - IEEE - Institute of Electrical and Electronics Engineers Inc.

T2 - International Conference on Electromagnetics in Advanced Applications (ICEAA), 2007

Y2 - 17 September 2007 through 21 September 2007

ER -

On the feasibility of using ferromagnetic materials for thin EM absorbers

Abstract

Conference

Subject classification (UKÄ)

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Cite this