GHz Conducted Noise Suppressors Using Ferrite Films Plated Directly on Printed Circuit Board and Polyimide Sheet

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概要

• 論文の詳細を見る

• Two types of conducted noise suppressors usable in a GHz range were fabricated using Ni-Zn ferrite films deposited from aqueous solutions. One is a direct-deposition type, in which Ni-Zn ferrite films are deposited directly on a microstrip line on an epoxy printed circuit board (PCB). The other is a sheet-type, in which the surfaces of Ni-Zn ferrite films deposited onto the polyimide sheet are in contact with the microstrip line. The direct-deposition type, using Ni-Zn ferrite film 3 μm thick, exhibited a strong transmission loss of 40 to 70% at 1.5-10 GHz, which far exceeds that obtained for commercial composite sheet type of noise suppressors (50 μm thick), in which fine ferromagnetic flakes are dispersed in a polymer matrix. The sheet type suppressor using Ni-Zn ferrite film exhibited better transmission loss and reflection loss than those of composite sheet type of noise suppressor, though the ferrite film 5 μm thick was much thinner than composite sheet 50 μm thick.

• 社団法人日本磁気学会の論文
• 2003-12-01

著者

• MATSUSHITA N.

  Dept. of Physical Electronics, Tokyo Institute of Technology

• Matsushita N.

  Department Of Physical Electronics Tokyo Institute Of Technology

• Kondo K.

  NEC Tokin Corporation

• Yoshida S.

  NEC Tokin Corporation

• Ono H.

  NEC Tokin Corporation

関連論文

• High Frequency Impedance and Conductivity of Spin-Spray Plated Ni-Zn Ferrite Thin Films
• Compensation for the Demagnetizing Field in Remanence Measurements of Perpendicular Magnetic Recording Films
• Adding Si02 to Increase Coercivity and Squareness Ratio of Ba Ferrite Films for Perpendicular Magnetic Recording Media (第4回アジア情報記録技術シンポジウム)
• Adding SiO_2 to Increase Coercivity And Squareness Ratio of Ba Ferrite Films for Perpendicular Magnetic Recording Media
• Compensation of demagnetizing field in remanence measurements of perpendicular magnetic recording films
• THE CONTROL OF COERCIVITY OF Co FERRITE FILMS FOR RIGID DISK MEDIA
• Dielectric Spectroscopy of the Plated Zn-Ni Ferrite Films
• Spin-Sprayed Ferrite Films Highly Permeable in the GHz Range, with Excellent Heat Resistance(Selected Papers from the Third International Workshop on High Frequency Micromagnetic Devices and Materials (MMDM3))
• GHz Conducted Noise Suppressors Using Ferrite Films Plated Directly on Printed Circuit Board and Polyimide Sheet

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