Composite electromagnetic wave absorber made of permalloy or sendust and effect of sendust particle size on absorption characteristics

K. Sakai, Y. Wada, S. Yoshikado

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

The effects of the size and shape of sendust particles on the absorption characteristics of composite electromagnetic wave absorbers made of polystyrene resin and sendust were investigated. We also investigated the difference in the absorption characteristics between permalloy and sendust. The sendust particles were granular or flakes and those of permalloy were granular. The size of sendust particles was varied in the range from approximately 5 to 20 μm. A metal-backed single layer absorber made of a composite containing small sendust particles absorbed more than 99% of electromagnetic wave power in the frequency range from 1 to 3 GHz. The values of the real part μ' r of the relative complex permeability μ* r for both magnetic materials became less than unity and had a minimum value at frequencies above 10 GHz. The composite made of small sendust particles exhibited a return loss of less than -20 dB at frequencies near 35 GHz for a suitable sample thickness.

Original languageEnglish
Title of host publicationProgress in Electromagnetics Research Symposium 2008, PIERS 2008 Cambridge
PublisherElectromagnetics Academy
Pages272-279
Number of pages8
ISBN (Print)9781618390547
Publication statusPublished - Jan 1 2008
Externally publishedYes
EventProgress in Electromagnetics Research Symposium 2008, PIERS 2008 Cambridge - Cambridge, MA, United States
Duration: Jul 2 2008Jul 6 2008

Publication series

NameProgress in Electromagnetics Research Symposium
ISSN (Print)1559-9450

Other

OtherProgress in Electromagnetics Research Symposium 2008, PIERS 2008 Cambridge
CountryUnited States
CityCambridge, MA
Period7/2/087/6/08

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials

Fingerprint Dive into the research topics of 'Composite electromagnetic wave absorber made of permalloy or sendust and effect of sendust particle size on absorption characteristics'. Together they form a unique fingerprint.

  • Cite this

    Sakai, K., Wada, Y., & Yoshikado, S. (2008). Composite electromagnetic wave absorber made of permalloy or sendust and effect of sendust particle size on absorption characteristics. In Progress in Electromagnetics Research Symposium 2008, PIERS 2008 Cambridge (pp. 272-279). (Progress in Electromagnetics Research Symposium). Electromagnetics Academy.