发明授权
US4631495A Low-noise RF preamplifier (especially for nuclear magnetic resonance
system)
失效
低噪声射频前置放大器（特别适用于核磁共振系统）
- 专利标题： Low-noise RF preamplifier (especially for nuclear magnetic resonance system)
- 专利标题（中）： 低噪声射频前置放大器（特别适用于核磁共振系统）
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申请号： US730522申请日： 1985-05-06
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公开(公告)号： US4631495A公开(公告)日： 1986-12-23
- 发明人: Otward M. Mueller , William A. Edelstein
- 申请人： Otward M. Mueller , William A. Edelstein
- 申请人地址： NY Schenectady
- 专利权人： General Electric Company
- 当前专利权人： General Electric Company
- 当前专利权人地址： NY Schenectady
- 主分类号： H03F1/26
- IPC分类号： H03F1/26 ; H03F3/19 ; H03F3/04
摘要：
A low-noise radio-frequency preamplifier, especially suited for use in the reception channel of a nuclear magnetic resonance spectrometer and the like, utilizes a low-noise input stage having a plurality of bipolar junction transistors effectively connected in radio-frequency parallel, but with each of the plurality of parallel bipolar transistors isolated from one another for direct current flow through at least one electrode thereof.
公开/授权文献
- US5827749A Ligand assay method 公开/授权日：1998-10-27
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