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1. 发明申请

US20050286710A1 Broadband XDSL transceiver 审中-公开
标题翻译：宽带XDSL收发器
公开(公告)号：US20050286710A1
公开(公告)日：2005-12-29
申请号：US11170395
申请日：2005-06-29
申请人： Stefan Barkaro , Torbjorn Randahl , Carl-Mikael Johansson , Lars Karlsson , Bo Bokinge
发明人： Stefan Barkaro , Torbjorn Randahl , Carl-Mikael Johansson , Lars Karlsson , Bo Bokinge
IPC分类号： H04B3/23 , H04M7/04
CPC分类号： H04B3/23
摘要： Broadband xDSL transceiver for transmitting and receiving signals in a predetermined broadband frequency range (ΔF) via a signal line which has a complex line impedance (ZL), wherein the xDSL transceiver (1) comprises a line driver (3) for driving a transmission signal applied to a signal input (4a, 4b) of said line driver (3) via said signal line; a receiver (8) for evaluating a reception signal received via said signal line and applied to a signal input of said receiver (8); an echo canceling bridge (10) for canceling the transmission signal at the signal input (9a, 9b) of said receiver (8); a sense impedance (11) connected to the signal line; a feedback resistor network (15a, 15b) provided between the sense impedance (11) and the signal input (4a, 4b) of said line driver (3) performing a synthesized termination impedance (ZT) of the xDSL transceiver (1) as a product of the sense impedance and an impedance synthesis factor (G); wherein the sense impedance (11) is a complex impedance (ZS) so that the synthesized termination impedance (ZT) matches the line impedance (ZL) over the predetermined broadband frequency range (ΔF).
摘要翻译：宽带xDSL收发器，用于经由具有复数线路阻抗（ZLLL）的信号线在预定宽带频率范围（DeltaF）中发送和接收信号，其中xDSL收发器（1）包括线路驱动器（3），用于经由所述信号线驱动施加到所述线路驱动器（3）的信号输入（4a，4b）的传输信号; 用于评估经由所述信号线接收并施加到所述接收器（8）的信号输入的接收信号的接收器（8）; 用于消除所述接收机（8）的信号输入（9a，9b）处的发送信号的回波消除桥（10）。连接到信号线的感测阻抗（11）; 设置在所述线路驱动器（3）的所述感测阻抗（11）和所述线路驱动器（3）的信号输入端（4a，4b）之间的反馈电阻器网络（15a，15b）执行合成的终端阻抗（Z < 作为感测阻抗和阻抗合成因子（G）的乘积的xDSL收发器（1）的“SUB”）; 其中所述感测阻抗（11）是复阻抗（Z S S S），使得合成的终端阻抗（Z SUB）与线路阻抗（Z < / SUB>）超过预定的宽带频率范围（DeltaF）。

2. 发明申请

US20050156664A1 Class-D line driver arrangement 审中-公开
标题翻译： D类线驱动器安排
公开(公告)号：US20050156664A1
公开(公告)日：2005-07-21
申请号：US10760614
申请日：2004-01-20
申请人： Torbjorn Randahl , Carl-Mikael Johansson , Stefan Barkaro , Bo Bokinge , Lars Karlsson
发明人： Torbjorn Randahl , Carl-Mikael Johansson , Stefan Barkaro , Bo Bokinge , Lars Karlsson
IPC分类号： H03F3/217 , H04M1/738 , H04M11/06 , H04Q1/54
CPC分类号： H03F3/217
摘要： Line driver arrangement comprising a class-D switching amplifier having a switching frequency for receiving an input transmit signal and outputting an amplified transmit signal and a transformer having a predetermined leakage inductance for receiving the amplified transmit signal and outputting a transform signal as an output transmit signal. The leakage inductance is predetermined for low-pass filtering of the amplified transmit signal. The line driver arrangement reduces the number of additional discrete inductances, capacitances and or resistor for forming low-pass filters significantly. The inventive line driver arrangement is particularly power-efficient due to the included class-D switching amplifier. The predetermined leakage inductance leads to a suppression of a resonance due to the switching frequency of the class-D amplifier in the power spectral density. Hence, the inventive line driver arrangement complies at least with the ADSL PSD mask requirements.
摘要翻译：线路驱动器装置，包括具有用于接收输入发射信号并输出放大的发射信号的开关频率的D类开关放大器和具有预定的漏电感的变压器，用于接收放大的发射信号并输出变换信号作为输出发射信号。漏电感对于放大的发射信号的低通滤波是预先确定的。线路驱动器布置减少了用于形成低通滤波器的附加离散电感，电容和/或电阻的数量。由于所包括的D类开关放大器，本发明的线路驱动器装置特别省电。预定的漏电感导致由于D类放大器在功率谱密度中的开关频率而导致的谐振抑制。因此，本发明的线路驱动器装置至少符合ADSL PSD掩模要求。

3. 发明申请

US20060006941A1 Class D-amplifier 有权
标题翻译： D类放大器
公开(公告)号：US20060006941A1
公开(公告)日：2006-01-12
申请号：US11153658
申请日：2005-06-15
申请人： Karl Barkaro , Bo Bokinge , Carl-Mikael Johansson , Lars Karlsson , Torbjorn Randahl , Andreas Wiesbauer
发明人： Karl Barkaro , Bo Bokinge , Carl-Mikael Johansson , Lars Karlsson , Torbjorn Randahl , Andreas Wiesbauer
IPC分类号： H03F3/217
CPC分类号： H03F3/2171 , H03F1/38 , H03F3/45475 , H03F2200/78
摘要： A class D-amplifier which amplifies an input signal applied to an signal input of said amplifier (21) to generate an amplified signal output by an signal output (28a, 28b) of said amplifier comprising a comparator (23) which compares the applied input signal with a switch signal to generate a pulse width modulated signal; a driving unit (24) which amplifies the pulse width modulated signal to generate the amplified output signal; and a feedback circuit which generates the self oscillating switch signal for the comparator (23).
摘要翻译：一种D类放大器，其放大施加到所述放大器（21）的信号输入端的输入信号，以产生由所述放大器的信号输出（28a，28b）输出的放大信号，该信号输出包括比较器（23）利用开关信号施加输入信号以产生脉宽调制信号; 驱动单元（24），其放大脉宽调制信号以产生放大的输出信号; 以及产生比较器（23）的自振荡开关信号的反馈电路。

4. 发明授权

US07282992B2 Class D-amplifier 有权
标题翻译： D类放大器
公开(公告)号：US07282992B2
公开(公告)日：2007-10-16
申请号：US11153658
申请日：2005-06-15
申请人： Karl Stefan Barkaro , Bo Bokinge , Carl-Mikael Johansson , Lars Karlsson , Torbjorn Ivar Randahl , Andreas Wiesbauer
发明人： Karl Stefan Barkaro , Bo Bokinge , Carl-Mikael Johansson , Lars Karlsson , Torbjorn Ivar Randahl , Andreas Wiesbauer
IPC分类号： H03F3/217
CPC分类号： H03F3/2171 , H03F1/38 , H03F3/45475 , H03F2200/78
摘要： A class D-amplifier which amplifies an input signal applied to an signal input of said amplifier (21) to generate an amplified signal output by an signal output (28a, 28b) of said amplifier comprising a comparator (23) which compares the applied input signal with a switch signal to generate a pulse width modulated signal; a driving unit (24) which amplifies the pulse width modulated signal to generate the amplified output signal; and a feedback circuit which generates the self oscillating switch signal for the comparator (23).
摘要翻译：一种D类放大器，其放大施加到所述放大器（21）的信号输入端的输入信号，以产生由所述放大器的信号输出（28a，28b）输出的放大信号，该信号输出包括比较器（23）利用开关信号施加输入信号以产生脉宽调制信号; 驱动单元（24），其放大脉宽调制信号以产生放大的输出信号; 以及产生用于比较器（23）的自振荡开关信号的反馈电路。

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