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1. 发明授权

US5661432A Linear tunable Gm-C integrator 失效
标题翻译：线性可调Gm-C积分器
公开(公告)号：US5661432A
公开(公告)日：1997-08-26
申请号：US588345
申请日：1996-01-18
申请人： Zhong Yuan Chang , Didier Rene Haspeslagh
发明人： Zhong Yuan Chang , Didier Rene Haspeslagh
IPC分类号： H03H11/04 , H03J3/16 , H03F3/45 , H03F3/191
CPC分类号： H03J3/16 , H03H11/0422
摘要： A time-continuous tunable Gm-C integrator including a "super Gm" differential input stage (O1; MI1/O2, MI2) and using linear and constant degeneration resistors (R1/R2) for obtaining the most optimal linear input-voltage to output-current conversion is tunable in a time-continuous manner. The integrator is provided with three tuning CMOS transistors (MU1, MU2, MU3) controlling the integrating currents flowing between the input stages and from the input stages towards the outputs (OP/ON). By a suitable control of the tuning transistors and owing to the fact that the voltage swing across the latter is small, it is possible to obtain a perfectly linear transconductance (Gm) characteristic over the whole operating range of the integrator.
摘要翻译：包括“超级Gm”差分输入级（O1; MI1 / O2，MI2）和使用线性和常数退化电阻（R1 / R2）的时间连续可调Gm-C积分器，用于获得最佳线性输入电压输出电流转换可以以时间连续的方式调整。积分器配有三个调谐CMOS晶体管（MU1，MU2，MU3），用于控制输入级和输入级之间向输出（OP / ON）流动的积分电流。通过对调谐晶体管的适当控制，并且由于跨越后者的电压摆幅小的事实，可以在积分器的整个工作范围内获得完美的线性跨导（Gm）特性。

2. 发明授权

US5787120A Transmission method and transmitter for signals with a decoupled low level and at least one coupled high level for a telecommunication network including such a transmitter 失效
标题翻译：用于包括这种发射机的电信网络具有去耦低电平和至少一个耦合高电平的信号的传输方法和发射机
公开(公告)号：US5787120A
公开(公告)日：1998-07-28
申请号：US590338
申请日：1996-01-23
申请人： Filip Marcel Louagie , Didier Rene Haspeslagh
发明人： Filip Marcel Louagie , Didier Rene Haspeslagh
IPC分类号： H04L25/02 , H04B3/00 , H04L25/00
CPC分类号： H04L25/028 , H04L25/0278 , H04L25/0272
摘要： To go from a coupled high level to a decoupled low level, a source unit (SU) of a transmitter (T) must be decoupled from a transmission line (TL) by a impedance unit (IU). As a result, oscillatory transition phenomena appear in the output signal and this signal possibly goes beyond a prescribed template. To avoid such overshoot problems the present transmitter (T) decreases the signal level during a decrease period before decoupling the source unit (SU) from the transmission line (TL). Therefore a source control circuit (SCC) is included in the control unit (CU) of the transmitter (T) for controlling the source level in such a way that the output signal level is decreasing.
摘要翻译：要从耦合的高电平转换到解耦的低电平，发射器（T）的源单元（SU）必须通过阻抗单元（IU）从传输线（TL）去耦。结果，在输出信号中出现振荡转变现象，并且该信号可能超出规定的模板。为了避免这种过冲问题，本发送器（T）在将源单元（SU）与传输线（TL）解耦之前在减小期间减小信号电平。因此，源控制电路（SCC）包括在发射器（T）的控制单元（CU）中，用于以使得输出信号电平降低的方式控制源极电平。

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