发明公开
EP1292021A2 Radio frequency amplifier and television tuner
有权
Fernsehtuner mit einemHochfrequenzverstärker
- 专利标题： Radio frequency amplifier and television tuner
- 专利标题（中）： Fernsehtuner mit einemHochfrequenzverstärker
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申请号： EP02102214.0申请日： 2002-08-23
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公开(公告)号： EP1292021A2公开(公告)日： 2003-03-12
- 发明人: Madni, Arshad , Lauria, Franco , Cowley, Nicholas, Paul , Trodd, Lance, Rhys , Mudd, Mark, Stephen, John
- 申请人： Zarlink Semiconductor Limited
- 申请人地址： Cheney Manor Swindon, Wiltshire SN2 2QW GB
- 专利权人： Zarlink Semiconductor Limited
- 当前专利权人： Zarlink Semiconductor Limited
- 当前专利权人地址： Cheney Manor Swindon, Wiltshire SN2 2QW GB
- 代理机构： Robinson, John Stuart
- 优先权： GB1212166 20010901
- 主分类号： H03F3/45
- IPC分类号： H03F3/45
摘要：
A radio frequency amplifier comprises a long tail pair of transistors 1, 2 provided with a tail current source 8, 9. The bases of the transistors 1 and 2 are driven by emitter followers comprising transistors 20 and 21 provided with collector load resistors 24 and 25. Feedback capacitors 26 and 27 ensure stability and feedback resistors 28, 29 bias the amplifier without degrading noise performance. The amplifier may be driven unbalanced while retaining good second harmonic distortion performance.
公开/授权文献
- EP1292021B1 Television tuner comprising a radio frequency amplifier 公开/授权日：2007-07-04
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