Distortion Characteristics of an Even Harmonic Type Direct Conversion Receiver for CDMA Satellite Communications (Special Issue on Low Distortion Technology for Microwave Devices and Circuits)
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概要
- 論文の詳細を見る
This paper describes the distortion characteristics of an even harmonic type direct converter (EH-DC) used in earth stations for CDMA satellite communications. Direct conversion technique is known as a method to simplify circuit topologies of microwave transceivers. In satellite communications, multi carriers which have high and nearly equal level are provided to a quadrature mixer of the EH-DC. Hence, the third-order intermodulation degrades receiving characteristics. In this paper, we show the relationship between the distortion characteristics and noise figure of the EH-DC for CDMA satellite communication systems. Furthermore, we show NPR of even harmonic quadrature mixers caused by the third-order intermodulation. Expertmental results in X-band indicate that the proposed EH-DC has almost the same BER characteristics compared with a heterodyne type transceiver.
- 社団法人電子情報通信学会の論文
- 1999-05-25
著者
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Kawakami Kenji
Information Technology R&d Center Mitsubishi Electric Corporation
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Tajima K
Dept. Of Ee The University Of Tokushima
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ISHIDA Osami
Information Technology R&D Center, Mitsubishi Electric Corporation
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ITOH Kenji
Mobile Terminal Center, Mitsubishi Electric Corporation
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ISOTA Yoji
Information Technology R & D Center, Mitsubishi Electric Corporation
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IKEMATSU Hiroshi
Communication Systems Center, Mitsubishi Electric Corporation
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Ishida O
Information And Communications Univ. Daejon Kor
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Ishida Osami
Information And Communications University
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Isota Y
Information Technology R & D Center Mitsubishi Electric Corporation
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Ikematsu H
Mitsubishi Electric Corp. Amagasaki‐shi Jpn
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Ikematsu Hiroshi
Communication Systems Center Mitsubishi Electric Corporation
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Itoh K
Mobile Terminal Center Mitsubishi Electric Corporation
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IKEMATSU Hiroshi
Communication System Center, Mitsubishi Electric Corporation
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