Measurement and Magnetic Countermeasure Methodology to Deal with Inverter Noise

Masahiro Yamaguchi, Yasunori Miyazawa, Jinyang Ma, Mitsuharu Sato, Akihiro Takahashi, Satoshi Tanaka, Makoto Nagata, Ranajit Sai

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

Abstract

In this paper, the influence of unnecessary radio waves at the receiver circuit of a cell phone handset is suppressed by a new magnetic material in order to contribute to the technology for reliably sharing these different systems at frequencies from 700 MHz to 6 GHz where many radio waves systems are concentrated. The material used is called hexagonal ferrite and is widely used as a permanent magnet material in general. Since this material can generate magnetic losses in a frequency selective manner in and above the SHF band, the fine particles hexagonal ferrite are mixed with a polymer binder to form a powder composite and applied on the wiring on PCB. This component was used as a frequency variable resistor for conduction noise suppression. Performance verification was evaluated by input loss ratio, Ploss / Pin, on the microstrip line based on IEC 62333-2. It became clear that this new noise suppressor has excellent noise suppressing function in the GHz band.

Original languageEnglish
Title of host publicationEMC Europe 2018 - 2018 International Symposium on Electromagnetic Compatibility
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages608-612
Number of pages5
ISBN (Electronic)9781467396974
DOIs
Publication statusPublished - 2018 Oct 5
Event2018 International Symposium on Electromagnetic Compatibility, EMC Europe 2018 - Amsterdam, Netherlands
Duration: 2018 Aug 272018 Aug 30

Publication series

NameIEEE International Symposium on Electromagnetic Compatibility
Volume2018-August
ISSN (Print)1077-4076
ISSN (Electronic)2158-1118

Other

Other2018 International Symposium on Electromagnetic Compatibility, EMC Europe 2018
Country/TerritoryNetherlands
CityAmsterdam
Period18/8/2718/8/30

Keywords

  • RF IC
  • conduction noise
  • hexagonal ferrite
  • noise suppressor
  • powder composite
  • wireless communication

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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