Study on magnetic-flux band-pass filter using magnetic film

• Project/Area Number: 25820131
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Electron device/Electronic equipment
• Research Institution: National Institute of Technology, Toyota College (2015); Tohoku University (2013-2014)
• Principal Investigator: Muroga Sho 豊田工業高等専門学校, 電気・電子システム工学科, 講師 (60633378)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Project Status: Completed (Fiscal Year 2015)
• Budget Amount: ¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000); Fiscal Year 2015: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000); Fiscal Year 2014: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000); Fiscal Year 2013: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
• Keywords: 電磁環境両立性 / 磁気応用 / 高周波回路 / 磁性薄膜 / 帯域通過フィルタ / 電子デバイス

Outline of Final Research Achievements

This study demonstrates and analytically discussed that a magnetic film becomes transparent for the magnetic flux when the relative permeability of the magnetic film becomes negative above the intrinsic ferromagnetic resonance frequency. The shielding effectiveness of the magnetic flux through the magnetic film was evaluated by a magnetic circuit considering leakage magnetic flux from the magnetic film and demonstrated by the near field measurement using shielded loop coil type magnetic field probe. In this case, the coplanar and microstrip transmission lines was developed as a flux source. As a result, it was clarified that the magnetic flux in the magnetic circuit increases when the magnetic circuit resonated with a negative reluctance of magnetic film. Therefore, the magnetic film can behave as a bandpass filter.

Research Products

• [Journal Article] Radiated and conductive noise suppression of non-magnetic metal-coated non-woven fabric (2015)
  • Author(s): T.Tanaka, C. Okamura, S. Okajima, K. Kato, S. Muroga, Y. Asazuma, M. Yamaguchi
  • Journal Title: 2015 Asia-Pacific Symposium on Electromagnetic Compatibility(APEMC2015) Volume: 国際会議論文 Pages: 532-535
  • DOI: 10.1109/apemc.2015.7175408
  • Peer Reviewed / Open Access
• [Journal Article] On-chip integrated magnetic thin-film solution to countermeasure digital noise on RF IC (2015)
  • Author(s): M.Yamaguchi, S.Tanaka, Y.Endo,S. Muroga, M. Nagata
  • Journal Title: 2015 Asia-Pacific Symposium on Electromagnetic Compatibility(APEMC2015) Volume: 国際会議論文 Pages: 536-539
  • DOI: 10.1109/apemc.2015.7175409
  • Peer Reviewed / Open Access
• [Presentation] 磁性膜を用いた電磁ノイズ抑制体のノイズ抑制機構 (2016)
  • Author(s): 室賀 翔
  • Organizer: IEEE EMC Society Sendai Chapter Colloquium
  • Place of Presentation: 仙台市
  • Year and Date: 2016-02-23
  • Invited
• [Presentation] Radiated and Conductive Noise Suppression of Non-magnetic Metal Coated Non-woven Fabric (2015)
  • Author(s): Sho Muroga, Yuki Asazuma, Yamaguchi Masahiro, Tomoya Tanaka, Chie Okamura, Shin-ichi Okajima and Kazufumi Kato
  • Organizer: The 2015 Asia-Pacific International EMC Symposium and Exhibition
  • Place of Presentation: Taipei, Taiwan
  • Year and Date: 2015-05-25 – 2015-05-29
  • Invited
• [Presentation] Radiated and conductive noise suppression of non-magnetic metal-coated non-woven fabric (2015)
  • Author(s): T.Tanaka, C. Okamura, S. Okajima, K. Kato, S. Muroga, Y. Asazuma, M. Yamaguchi
  • Organizer: 2015 Asia-Pacific Symposium on Electromagnetic Compatibility(APEMC2015)
  • Place of Presentation: Tawpei, Taiwan
  • Year and Date: 2015-05-25
  • Int'l Joint Research
• [Presentation] On-chip integrated magnetic thin-film solution to countermeasure digital noise on RF IC (2015)
  • Author(s): M.Yamaguchi, S.Tanaka, Y.Endo,S. Muroga,M. Nagata
  • Organizer: 2015 Asia-Pacific Symposium on Electromagnetic Compatibility(APEMC2015)
  • Place of Presentation: Tawpei, Taiwan
  • Year and Date: 2015-05-25
  • Int'l Joint Research
• [Presentation] Development of Meltbrown Non - Woven Fabric Type Non-Magnetic Noise Suppressor (2015)
  • Author(s): Jiang Fu, Masahiro Yamaguchi, Sho Muroga, Tomoya Tanaka, Chie Okamura, Lumina Obi, Kazufumi Kato
  • Organizer: 2016 Asia-Pacific Symposium on Electromagnetic Compatibility(APEMC2016)
  • Place of Presentation: Shenzhen, China
  • Year and Date: 2015-05-18
  • Int'l Joint Research
• [Presentation] 磁性薄膜を用いたオンチップ電磁ノイズ抑制体に関する研究 (2015)
  • Author(s): 室賀 翔
  • Organizer: Colloquium on Functional Magnetic Materials and Future Magnetics
  • Place of Presentation: 豊橋市
  • Year and Date: 2015-05-12
  • Invited
• [Presentation] Study on Directional Dependence of An On-chip Integrated Magnetic Near-Field Probe (2014)
  • Author(s): 重田洋二郎，荒井 薫，室賀 翔，山口正洋
  • Organizer: 平成26年度電気関係学会東北支部連合大会
  • Place of Presentation: 山形大学百周年記念会館，米沢
  • Year and Date: 2014-08-21 – 2014-08-22
• [Presentation] Electromagnetic Shielding Effectiveness of Non-magnetic Metal Coated Non-woven Fabric Noise Suppressor (2014)
  • Author(s): Sho Muroga, Yuki Asazuma, Yamaguchi Masahiro, Tomoya Tanaka, Chie Okamura, Shin-ichi Okajima and Kazufumi Kato
  • Organizer: IEEE International Symposium on Electromagnetic Compatibility 2014
  • Place of Presentation: Raleigh, USA
  • Year and Date: 2014-08-03 – 2014-08-08
• [Presentation] Effect of Demagnetizing Field on Frequency Dispersion of Complex Permeability (2014)
  • Author(s): S. Muroga, M. Yamaguch
  • Organizer: 2014 International Symposium on Electromagnetic Compatibility, Tokyo
  • Place of Presentation: 一ツ橋ホール, Tokyo, Japan
  • Year and Date: 2014-05-12 – 2014-05-16
• [Presentation] Effect of Demagnetizaing Field on Frequency Dispersoin of Complex Permeability (2014)
  • Author(s): Sho Muroga, Masahiro Yamaguchi
  • Organizer: EMC'14/Tokyo
  • Place of Presentation: 東京
• [Presentation] In-Band Spurious Attenuation in LTE-Class RFIC Chip using a Soft Magnetic Thin Film (2013)
  • Author(s): Sho Muroga, Yasushi Endo, Tetsuo Ito, Satoshi Tanaka, Motoki Murakami, Kazuaki Hori, Satoru Takahashi, Azuma Naoya, Tetsuya Makita, Satoshi Imai, Makoto Nagata, Masahiro Yamaguchi
  • Organizer: IEEE EMC2014 Symposium
  • Place of Presentation: デンバー，USA