发明公开
- 专利标题: Wideband feedback amplifier
- 专利标题(中): GegengekoppelterBreitbandverstärker。
-
申请号: EP86309263.1申请日: 1986-11-27
-
公开(公告)号: EP0227323A2公开(公告)日: 1987-07-01
- 发明人: Nelson, David A.
- 申请人: COMLINEAR CORPORATION
- 申请人地址: 4800 Wheaton Drive Fort Collins Colorado 80525 US
- 专利权人: COMLINEAR CORPORATION
- 当前专利权人: COMLINEAR CORPORATION
- 当前专利权人地址: 4800 Wheaton Drive Fort Collins Colorado 80525 US
- 代理机构: Taylor, Derek George
- 优先权: US813590 19851226
- 主分类号: H03F1/48
- IPC分类号: H03F1/48 ; H03F1/08 ; H03F3/45
摘要:
Current feedback is employed in differential and unbalanced input wideband feedback amplifiers to render bandwidth and transient response insensitive to closed loop gain over a wide range. In the differential amplifier, two NPN transistors (Qa, Qb) have their emitters connected by a resistor (Ra) and receive input signals (Va, Vb) at their bases. The collectors are connected to a current or voltage mirror, and gain means (A(s)) and a resistor (Rc) are connected between one of the collectors and the emitter of the transistor (Qa).
信息查询
IPC分类: