Applications of Spin Sprayed Ferrite Films on Coplanar Transmission Line for RF Noise Suppression
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概要
- 論文の詳細を見る
The RF electromagnetic noise attenuation on coplanar transmission line was investigated using the newly developed spin sprayed Ni-Zn (-Co) soft ferrite films with high resistivity. The RF noise suppressor was composed of magnetic film/polyimide/Cu coplanar transmission line/seed layer on glass substrate. The coplanar transmission line with a characteristic impedance of 50 Ω had a 50 μm-wide and 3 μm-thick signal line. The power loss of the coplanar transmission line with Ni-Zn (-Co) ferrites using insulating layer between the transmission line and magnetic film was smaller than that of CoNbZr films at GHz range. It is due to the high resistivity (517x10^2 Ωcm〜240x10^3 Ωcm) of the ferrite films in comparison with that of the metallic magnetic CoNbZr film (120 μΩcm). The power loss of the coplanar transmission line using the ferrite films without insulating layer was compared with that of CoNbZr with a7.5-μm-thick insulating layer. The power loss of the ferrite films without insulating layer was as large as that of the CoNbZr film with insulating layer over 1 GHz.
- 社団法人日本磁気学会の論文
- 2003-12-01
著者
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Kim Ki
Dept. Of Electrical And Communication Engineering Graduate School Of Engineering Tohoku Univ.
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Matsushita N
Dept. Of Physical Electronics Tokyo Institute Of Technology
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MATSUSHITA Nobuhiro
Dept. of Physics Electronics, Tokyo Inst. Of Tech.
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ABE Masanori
Dept. of Physics Electronics, Tokyo Inst. Of Tech.
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Yamaguchi Masahiro
Dept. of Electrical and Communication, Engineering Graduate School of Engineering, Tohoku Univ.
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Arai Ken-Ichi
Research Institute of Electrical Communication, Tohoku Univ.
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Matsushita Nobuhiro
Dept. Of Physical Electronics Tokyo Institute Of Technology
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Abe Masanori
Dept. Of Physical Electronics Tokyo Institute Of Technology
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Arai Ken-ichi
Reseach Institute Of Electrical Communication Tohoku University
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Yamaguchi Masahiro
Dept. Of Electrical And Communication Engineering Graduate School Of Engineering Tohoku Univ.
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