公开(公告)号：US20070229172A1

公开(公告)日：2007-10-04

申请号：US11727960

申请日：2007-03-29

申请人： Taizou Tatsumi ,  Sosaku Sawada

发明人： Taizou Tatsumi ,  Sosaku Sawada

IPC分类号： H03F3/08

CPC分类号： H03F3/087 ,  H03F1/08 ,  H03F2200/78

摘要： An electronic circuit includes: a control circuit that controls the gain of a transimpedance amplifier by taking part of an input current to be input to the transimpedance amplifier, based on the output voltage of the transimpedance amplifier; and a PIN diode that is provided between an input of the transimpedance amplifier and the control circuit, and is connected in the forward direction with respect to the current to be drawn into the control circuit.

摘要翻译： 电子电路包括：控制电路，其基于所述跨阻抗放大器的输出电压，通过将输入到所述跨阻抗放大器的一部分输入电流控制跨阻抗放大器的增益; 以及PIN二极管，其设置在跨阻放大器的输入端和控制电路之间，并且相对于要吸入控制电路的电流在正向连接。

公开(公告)号：US07579915B2

公开(公告)日：2009-08-25

申请号：US11727960

申请日：2007-03-29

申请人： Taizou Tatsumi ,  Sosaku Sawada

发明人： Taizou Tatsumi ,  Sosaku Sawada

IPC分类号： H03F3/08

CPC分类号： H03F3/087 ,  H03F1/08 ,  H03F2200/78

摘要： An electronic circuit includes: a control circuit that controls the gain of a transimpedance amplifier by taking part of an input current to be input to the transimpedance amplifier, based on the output voltage of the transimpedance amplifier; and a PIN diode that is provided between an input of the transimpedance amplifier and the control circuit, and is connected in the forward direction with respect to the current to be drawn into the control circuit.

摘要翻译： 电子电路包括：控制电路，其基于所述跨阻抗放大器的输出电压，通过将输入到所述跨阻抗放大器的一部分输入电流控制跨阻抗放大器的增益; 以及PIN二极管，其设置在跨阻放大器的输入端和控制电路之间，并且相对于要吸入控制电路的电流在正向方向上连接。

公开(公告)号：US08704592B2

公开(公告)日：2014-04-22

申请号：US13428374

申请日：2012-03-23

申请人： Taizou Tatsumi ,  Keiji Tanaka ,  Sosaku Sawada

发明人： Taizou Tatsumi ,  Keiji Tanaka ,  Sosaku Sawada

IPC分类号： H03F3/60

CPC分类号： H03F3/45089 ,  H03F3/45475 ,  H03F3/605 ,  H03F2203/45138 ,  H03F2203/45392 ,  H03F2203/45612

摘要： A traveling wave amplifier (TWA) primarily for driving a semiconductor optical device is disclosed. The TWA of an embodiment provides a plurality of differential amplifiers of the first type and an additional differential amplifier of the second type, where are they are connected between the input and the output of the TWA. The differential amplifiers of the first type provide a first delay from the input to the output, while, the differential amplifier of the second type provide a second delay longer than the first delay between the input and the output of the TWA.

摘要翻译： 公开了主要用于驱动半导体光学器件的行波放大器（TWA）。 实施例的TWA提供第一类型的多个差分放大器和第二类型的附加差分放大器，它们连接在TWA的输入和输出之间。 第一类型的差分放大器提供从输入到输出的第一延迟，而第二类型的差分放大器提供比TWA的输入和输出之间的第一延迟更长的第二延迟。

公开(公告)号：US20120249232A1

公开(公告)日：2012-10-04

申请号：US13428374

申请日：2012-03-23

申请人： Taizou TATSUMI ,  Keiji TANAKA ,  Sosaku SAWADA

发明人： Taizou TATSUMI ,  Keiji TANAKA ,  Sosaku SAWADA

IPC分类号： H03F3/60

CPC分类号： H03F3/45089 ,  H03F3/45475 ,  H03F3/605 ,  H03F2203/45138 ,  H03F2203/45392 ,  H03F2203/45612

摘要： A traveling wave amplifier (TWA) primarily for driving a semiconductor optical device is disclosed. The TWA of an embodiment provides a plurality of differential amplifiers of the first type and an additional differential amplifier of the second type, where are they are connected between the input and the output of the TWA. The differential amplifiers of the first type provide a first delay from the input to the output, while, the differential amplifier of the second type provide a second delay longer than the first delay between the input and the output of the TWA.

摘要翻译： 公开了主要用于驱动半导体光学器件的行波放大器（TWA）。 实施例的TWA提供第一类型的多个差分放大器和第二类型的附加差分放大器，它们连接在TWA的输入和输出之间。 第一类型的差分放大器提供从输入到输出的第一延迟，而第二类型的差分放大器提供比TWA的输入和输出之间的第一延迟更长的第二延迟。

公开(公告)号：US20120217381A1

公开(公告)日：2012-08-30

申请号：US13401887

申请日：2012-02-22

申请人： Taizou TATSUMI

发明人： Taizou TATSUMI

IPC分类号： H03F3/08 ,  H03G3/20 ,  H03F3/45

CPC分类号： H03F3/087 ,  H03F3/45089 ,  H03F2200/405 ,  H03F2203/45138 ,  H03F2203/45302 ,  H03G1/0023 ,  H03G3/3084

摘要： A variable gain amplifier canceling the dependence of the frequency bandwidth thereof on the gain is disclosed. The variable gain amplifier includes a differential stage with a cascade transistor put between an amplifying transistor and a load resistor. The amplifier further includes a current supplier and a current extractor. The current supplier extracts a current flowing in the second transistor by supplying an additional current to the amplifying transistor. The current extractor adds the additional current flowing in the load resistor which is extracted by the additional current by the current supplier. The bias condition of the load resistor is kept substantially constant independent of the equivalent impedance of the cascade transistor.

摘要翻译： 公开了一种消除其频率带宽对增益的依赖性的可变增益放大器。 可变增益放大器包括放大晶体管和负载电阻之间的级联晶体管的差分级。 放大器还包括当前供应商和当前提取器。 当前的供应商通过向放大晶体管提供附加电流来提取在第二晶体管中流动的电流。 电流提取器增加流过负载电阻器的额外电流，该额定电流由当前供应商由附加电流提取。 不管级联晶体管的等效阻抗，负载电阻的偏置条件保持基本恒定。