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公开(公告)号：US06937720B2
公开(公告)日：2005-08-30
申请号：US10026435
申请日：2001-12-27
CPC分类号： H03F3/211 , H03F1/3229 , H03F3/217 , H03F2200/331 , H03F2200/432
摘要： A line driver having a non-linear amplifier that is arranged to provide a first output signal, which is an amplified input signal. The line driver also includes an analog linear amplifier providing a second output signal based on the difference between the input signal and the first output signal, placed in parallel with the non-linear amplifier. The line driver also includes a device to combine the first output signal and the second output signal to provide a total output signal to an output line.
摘要翻译： 具有非线性放大器的线驱动器，其被布置为提供作为放大的输入信号的第一输出信号。 线路驱动器还包括模拟线性放大器，其基于输入信号和与非线性放大器并联放置的第一输出信号之间的差异提供第二输出信号。 线路驱动器还包括组合第一输出信号和第二输出信号以向输出线提供总输出信号的装置。
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公开(公告)号：US07042284B2
公开(公告)日：2006-05-09
申请号：US10664856
申请日：2003-09-22
IPC分类号： H03F3/45
CPC分类号： H03F1/3211 , H03F1/02 , H03F3/211 , H03F2200/432
摘要： An operational amplifier arrangement having a non-linear amplifier and a linear amplifier, both having a pair of input terminals one of which is coupled to an arrangement input terminal, and both having an output terminal that is coupled to an arrangement output terminal. The output terminal of the non-linear amplifier is further coupled to the output terminal of the linear amplifier via a series impedance. The output terminal of the linear amplifier is coupled to the arrangement output terminal via a terminating impedance. The arrangement includes an active back termination arrangement coupled between the arrangement output terminal and either one of the pair of input terminals of the linear amplifier. Preferably, the linear amplifier is receiving a supply voltage that exceeds the supply voltage received by the non-linear amplifier.
摘要翻译： 一种具有非线性放大器和线性放大器的运算放大器装置，两者具有一对输入端子，其一个耦合到布置输入端子，并且两者具有耦合到布置输出端子的输出端子。 非线性放大器的输出端子通过串联阻抗进一步耦合到线性放大器的输出端子。 线性放大器的输出端通过端接阻抗与配置输出端相连。 该布置包括耦合在布置输出端子和线性放大器的一对输入端子中的任一个之间的有源后端接器件。 优选地，线性放大器正在接收超过由非线性放大器接收的电源电压的电源电压。
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公开(公告)号：US06529071B2
公开(公告)日：2003-03-04
申请号：US10026655
申请日：2001-12-27
IPC分类号： H03F136
CPC分类号： H03F1/34 , H03F1/0205 , H03F3/217 , H03F2200/331 , H03F2200/432
摘要： The present invention is related to a Line driver for amplifying an input signal, said line driver comprising: a first input terminal (11) for receiving said input signal, a non-linear amplifier (3) connected to said input terminal (11) and arranged to provide a first output signal at a first output terminal (13), a digital to analogue converter (15) arranged to transform said input signal to an analogue input signal, an analogue linear amplifier (5) comprising a second (6) and a third input terminal (8) and a second output terminal (10), set up as a comparator between a first correction signal provided at said second input terminal (6) and a second correction signal provided at said third input terminal (8) and arranged to provide a second output signal at said second output terminal (10), combining means arranged to combine said first output signal and said second output signal to provide a total output signal to an output line (7), a first operational amplifier (12) configured to sense the current of said total output signal and arranged to provide a third output signal at fourth output terminal (16), said third output signal being based on said current and the impedance of the output line, and a second operational amplifier (14) arranged to subtract said third output signal from said analogue input signal to provide a fourth output signal, wherein said first correction signal is the total output signal and the second correction signal is said fourth output signal.
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公开(公告)号：US08165283B2
公开(公告)日：2012-04-24
申请号：US11592310
申请日：2006-11-03
CPC分类号： H03H7/427 , H03H7/06 , H03H7/1758 , H04B3/02 , H04M11/062
摘要： A telecommunication filter arrangement comprising two similar filter cells (T1, S1a, S1b, R1a, R1b; T2, S2a, S2b, R2a, R2b) coupled in cascade to provide a POTS/ADSL splitter. The filter arrangement further comprises at third filter cell (C3, R3, S3) coupled in-between the two other filter cells and comprising a cell capacitor (C3) series coupled with the parallel connection of a cell coil (S3) and a cell resistor (R3). A 3rd order filter is so provided and the filter arrangement behaves as known 5th order filter but with a fixed “switchable insertion loss circuit”. This filter arrangement is thereby cheap, simple and has a small size with respect to the known filter arrangements, while providing good performances.
摘要翻译： 一种电信滤波器装置，包括串联耦合以提供POTS / ADSL分离器的两个类似的滤波单元（T1，S1a，S1b，R1a，R1b; T2a，S2a，S2b，R2a，R2b）。 滤波器装置还包括耦合在两个其它滤波器单元之间的第三滤波器单元（C3，R3，S3），并且包括与单元线圈（S3）的并联连接的单元电容器（C3）和单元电阻 （R3）。 提供了一个三阶滤波器，滤波器布置与已知的5阶滤波器相同，但具有固定的“可切换插入损耗电路”。 因此，这种过滤器装置便宜，简单，并且相对于已知的过滤装置具有小尺寸，同时提供良好的性能。
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