发明授权
- 专利标题： High-pass filter structure with programmable zeros
- 专利标题（中）： 具有可编程零点的高通滤波器结构
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申请号： US455850申请日： 1995-05-31
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公开(公告)号： US5644267A公开(公告)日： 1997-07-01
- 发明人: Francesco Brianti , Roberto Alini , Valerio Pisati , Paolo Gadducci
- 申请人： Francesco Brianti , Roberto Alini , Valerio Pisati , Paolo Gadducci
- 申请人地址： ITX Agrate Brianza
- 专利权人： SGS-Thomson Microelectronics, S.r.l.
- 当前专利权人： SGS-Thomson Microelectronics, S.r.l.
- 当前专利权人地址： ITX Agrate Brianza
- 优先权： EPX94830401 19940812
- 主分类号： H03H11/04
- IPC分类号： H03H11/04 ; H03F3/68
摘要：
A high-pass filter in particular for high-frequency applications and of the type comprising at least one input terminal (IN) and at least one output terminal (OUT) between which is defined a transfer function (FdT) and is inserted a biquadratic cell (18) incorporating a series of transconductance stages (2, 3, 4, 5) comprises a generator circuit (29) of variable currents (i.sub.K1, i.sub.K2) connected between a pair of stages (2, 3) of the biquadratic cell (18) and a voltage reference (GND). Said generator allows introduction of programmable zeroes in the transfer function (FdT) of the filter (20).
公开/授权文献
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