2-GHz Band Cryogenic Receiver Front End for Mobile Communication Base Station Systems (Special Issue on Personal, Indoor and Mobile Radio Communications)
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概要
- 論文の詳細を見る
An ultra low-noise and highly selective, experimental 2-GHz band cryogenic receiver front end(CRFE)has been newly developed for cellular base stations. It utilizes a high-Q superconducting filter, a very low noise cryogenic amplifier, and a highly reliable cooler that is very compact. Fundamental design of the CRFE is investigated. First, the equivalent noise temperature of the CRFE and the effect of improving CRFE sensitivity on base station reception are discussed. Next, essential technologies and fundamental characteristics of each component are described. Finally, influence of antenna noise, such as ground noise and man-made noise, is estimated through field tests both in urban and suburban areas.
- 社団法人電子情報通信学会の論文
- 2000-08-25
著者
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Satoh Kei
Ntt Docomo Inc. Wireless Laboratories
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NOJIMA Toshio
NTT Mobile Communcations Network Inc. (NTT DoCoMo)
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NOJIMA TOSHIO
Radio Environment Technology Research Laboratory, NTT DoCoMo, Inc.
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NARAHASHI Shoichi
NTT Mobile Communications Network Inc.(NTT DoCoMo)
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MIMURA Tetsuya
NTT Mobile Communications Network Inc.(NTT DoCoMo)
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SATOH Kei
NTT Mobile Communications Network Inc.(NTT DoCoMo)
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SUZUKI Yasunori
NTT Mobile Communications Network Inc.(NTT DoCoMo)
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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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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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Narahashi Shoichi
Ntt Docomo Inc. Wireless Laboratories
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MIMURA Tetsuya
NTT Mobile Communications Network Inc.
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