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연자성 합금 분말의 입자크기에 따른 전자파 흡수 특성 비교

Study of Electromagnetic Wave Absorption Properties with Particle Size in Soft Magnetic Alloy Powder

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참고문헌

주제분류금속공학

초록

Abstract

The electromagnetic wave (EM) absorption properties of various particle size have been investigated in a sheet-type absorber using the Fe73Si16B7Nb3Cu1 alloy powder. With decreasing the average particle size, the complex permeability (μr) and permittivity (εr) increased and the matching frequency is shifted toward lower frequency. The fabricated EM wave absorbers showed permeability 2~6, permittivity 17~23 for a -325~+400 mesh sample, and the calculated power absorption was as high as 80% in the frequency range over 2 GHz.

참고문헌 (3)

  1. "Engineering of Electromagnetic Wave Absorber", pp.40~50 (2006)
  2. "Toroidal Cores of VITROPERM" (1993)
  3. M. Anhalt, "J. Appl. Phys." (2007)

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