发明公开
- 专利标题： High sensitivity radio receiver
- 专利标题（中）： Funkempfängermit hoher Empfindlichkeit
-
申请号： EP99124917.8申请日： 1999-12-14
-
公开(公告)号： EP1014480A2公开(公告)日： 2000-06-28
- 发明人: Mimura, Tetsuya , Satoh, Kei , Narahashi, Shoichi , Nojima, Toshio
- 申请人： NTT MOBILE COMMUNICATIONS NETWORK INC.
- 申请人地址： 10-1, Toranomon 2-chome Minato-ku, Tokyo 105-8436 JP
- 专利权人： NTT MOBILE COMMUNICATIONS NETWORK INC.
- 当前专利权人： NTT MOBILE COMMUNICATIONS NETWORK INC.
- 当前专利权人地址： 10-1, Toranomon 2-chome Minato-ku, Tokyo 105-8436 JP
- 代理机构： Hoffmann, Eckart, Dipl.-Ing.
- 优先权： JP35858098 19981217; JP35858198 19981217; JP36077498 19981218
- 主分类号： H01Q1/36
- IPC分类号： H01Q1/36 ; H01Q3/30 ; H01Q1/24 ; H04B1/00 ; G01R33/34
摘要：
A receiver directs the center of the main beam of the antenna directivity response in a desired direction by passing signals received by n antenna elements 1a to 1d through a phase shifter 3. An output from the phase shifter 3 is passed through a receiving filter 5 and is then amplified by a low noise amplifier 6 to be delivered as an output. The phase shifter 3 is confined together with the receiving filter 5 and the amplifier 6 in a cryostat 8, and the phase shifter 3 as well as the receiving filter 5 and the amplifier 6 are cooled down by cooling means 9 through a cold stage 9a, whereby the thermal noises generated therein are reduced to a minimum.
公开/授权文献
- EP1014480A3 High sensitivity radio receiver 公开/授权日：2001-12-05
信息查询
