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1. 发明授权

US06240131B1 Digitally controlled transmission line equalizer 失效
标题翻译：数字传输线均衡器
公开(公告)号：US06240131B1
公开(公告)日：2001-05-29
申请号：US08884932
申请日：1997-06-30
申请人： Yi Cheng , Kris M. Holt
发明人： Yi Cheng , Kris M. Holt
IPC分类号： H03H730
CPC分类号： H04B3/145 , H03H11/1291
摘要： A filter has a transfer function. The filter includes a signal input for receiving an input signal and a signal output operatively coupled to the signal input for providing an output signal. A ratio of the output signal to the input signal is equal to the filter's transfer function. The filter also includes a set of control inputs, wherein each control input in the set of control inputs is adapted for providing a digital signal. Each selectable transconductive load in a set of selectable transconductive loads has a transconductance and is operatively coupled to the signal output and a control input in the set of control inputs. The transfer function is set in response to a digital signal provided by at least one control signal in the set of control signals. Each selectable transconductive load is selected in response to at least one control signal in the set of control signals. Accordingly, the value for the transfer function is further dependent upon transconductances provided by selectable transconductive loads that are selected.
摘要翻译：滤波器具有传递函数。滤波器包括用于接收输入信号的信号输入和可操作地耦合到信号输入的信号输出，用于提供输出信号。输出信号与输入信号的比例等于滤波器的传递函数。滤波器还包括一组控制输入，其中该组控制输入中的每个控制输入适于提供数字信号。一组可选择的跨导负载中的每个可选择的导电负载具有跨导，并且可操作地耦合到信号输出和该组控制输入中的控制输入。传递函数响应于由该组控制信号中的至少一个控制信号提供的数字信号而设定。响应于该组控制信号中的至少一个控制信号选择每个可选择的导电负载。因此，传递函数的值进一步取决于由选择的可选择的导电负载提供的跨导。

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