A Low-Loss 5 GHz Bandpass Filter Using HTS Quarter-Wavelength Coplanar Waveguide Resonators(<特集>Special Issue on Superconductive Electronics)
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概要
- 論文の詳細を見る
copyright(c)2002 IEICE許諾番号：07RB0174A new structure of a low-loss high temperature superconducting (HTS) filter is proposed by using quarter-wavelength coplanar waveguide (CPW) resonators. A 4-pole Chebyshev band-pass filter with the center frequency 5.0 GHz and the 0.01 dB-ripple fractional bandwidth 3.2% is designed based on the theory of direct-coupled resonator filters using K- and J-inverters. This filter is fabricated by using a high-T_c superconductive YBCO film deposited on a MgO dielectric substrate. The frequency response of the filter measured at 60 K agrees very well with the theoretical one. The insertion loss is 0.22 dB. The insertion loss of this filter is the lowest in HTS-CPW filters presented so far.
- 社団法人電子情報通信学会の論文
- 2002-03-01
著者
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Satoh Kei
Ntt Docomo Inc. Wireless Laboratories
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Suzuki Hideyuki
Faculty of Information and Computer Sciences, Toyohashi University of Technology
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NOJIMA TOSHIO
Radio Environment Technology Research Laboratory, NTT DoCoMo, Inc.
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MA Zhewang
Faculty of Engineering, Saitama University
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KOBAYASHI Yoshio
Faculty of Engineering, Saitama University
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SATOH Kei
Wireless Laboratories, NTT DoCoMo, Inc.
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NARAHASHI Shoichi
Wireless Laboratories, NTT DoCoMo, Inc.
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NOJIMA Toshio
Wireless Laboratories, NTT DoCoMo, Inc.
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Nojima Toshio
Radio Environment Technology Research Laboratory Ntt Docomo Inc.
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Nojima Toshio
Wireless Laboratories Ntt Docomo Inc.
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Kobayashi Y
The Department Of Electrical And Electronic Systems Saitama University
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Kobayashi Yoshio
Saitama Univ. Saitama‐shi Jpn
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Kobayashi Yoshio
Faculty Of Engineering Saitama University
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Ma Zhewang
Faculty Of Engineering Saitama University
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Nojima T
Graduate School Of Information Science And Technology Hokkaido University
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Narahashi Shoichi
Wireless Laboratories Ntt Docomo Inc.
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Suzuki Hideyuki
Faculty Of Engineering Saitama University
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Kobayashi Yoshio
Faculty Of Engineering Ibaraki University
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小林 禧夫
Faculty of Engineering, Saitama University
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馬 哲旺
Faculty of Engineering, Saitama University
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