共振のQ制御による漏洩電磁界の抑止

• 関 康雄

  東京農工大学

• 仁田 周一

  東京農工大学

書誌事項

タイトル別名

• Improve Methods by Q-Lowering Technique to EM-Shielding Effectiveness of Shielded Enclosure due to Anti-Resonance

抄録

This paper is to clarify the methods to improve the degradation of shielding effectiveness by a low Q-factor in shielded enclosure; particularly to improve the degradation of shielding effectiveness by realising low Q at anti-resonance frequency in low frequencies. In shielded enclosure, there are several eigenfrequencies which are decided by geometric structures. At these eigenfrequencies, we can generally observe resonance and anti-resonance phenomna. The shielding effectiveness is low in anti-resonance frequency while it is high in resonance frequency. In order to avoid the degradation of shielding effectiveness, we have to lower a Q-factor at shielded enclosure. There are two methods to realize this purpose. One method is to realize low-Q by improving the shape of shielded enclosure. The other is to change a dielectric constant ε and/or permeability μ in space of the enclosure by using some microwave absorber.

収録刊行物

• テレビジョン学会技術報告

  テレビジョン学会技術報告 14 (63), 37-42, 1990

  一般社団法人 映像情報メディア学会

キーワード

• resonance
• anti-resonance
• Q-factor
• shielding effectiveness
• shielded enclosure
• microwave absorber
• anechoic chamber
• TEM cell

詳細情報

• CRID: 1390282679494871168
• NII論文ID: 110003706847
• DOI: 10.11485/tvtr.14.63_37
• ISSN: 24330914
• ISSN: 03864227
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可