发明授权
- 专利标题： High sensitivity radio receiver
- 专利标题（中）： 高灵敏度无线电接收机
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申请号： US10725002申请日： 2003-12-02
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公开(公告)号： US07327996B2公开(公告)日： 2008-02-05
- 发明人: Ning Chen , Yoshiaki Tarusawa , Kei Satoh , Shoichi Narahashi , Noriyoshi Terada , Toshio Nojima
- 申请人： Ning Chen , Yoshiaki Tarusawa , Kei Satoh , Shoichi Narahashi , Noriyoshi Terada , Toshio Nojima
- 申请人地址： JP Tokyo
- 专利权人： NTT DoCoMo, Inc.
- 当前专利权人： NTT DoCoMo, Inc.
- 当前专利权人地址： JP Tokyo
- 代理机构： Oblon, Spivak, McClelland, Maier & Neustadt, P.C.
- 优先权： JP2002-351115 20021203; JP2002-351116 20021203
- 主分类号： H04B1/10
- IPC分类号： H04B1/10
摘要：
The invention relates to a high sensitivity receiver installed outdoors which may be used in a base station of a mobile communication system, for example. A received radio frequency signal is converted into a signal in a desired frequency band by a reception bandpass filter RXF3, is subject to a low noise amplification to a desired level by a low noise reception amplifier LNA4, and the amplified signal is converted into an optical signal by a laser diode LD5. RXF3, LNA4 and LD5 are confined in a heat shielding box. LD5 is cooled by cooling means to the order of critical temperature where RXF3, for example, assumes a superconducting state, whereby the dynamic range is increased and stabilized.
公开/授权文献
- US20040162042A1 High sensitivity radio receiver 公开/授权日：2004-08-19
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