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    High-speed electronic circuit having a cascode configuration
    1.
    发明授权
    High-speed electronic circuit having a cascode configuration 失效
    具有共源共栅配置的高速电子电路

    公开(公告)号：US5510745A

    公开(公告)日：1996-04-23

    申请号：US170997

    申请日：1993-12-21

    申请人： Hiroshi Hamano ,  Izumi Amemiya ,  Takuji Yamamoto ,  Hiroo Kitasagami ,  Takeshi Ihara

    发明人： Hiroshi Hamano ,  Izumi Amemiya ,  Takuji Yamamoto ,  Hiroo Kitasagami ,  Takeshi Ihara

    IPC分类号： H03F1/22 ,  H03F3/45 ,  H03K5/15 ,  H03K19/018 ,  H03K19/082

    CPC分类号： H03K19/01806 ,  H03F1/22 ,  H03F3/45089 ,  H03K19/01825 ,  H03K5/15

    摘要： A high speed electronic circuit has a cascode circuit configuration and is provided with a bias current source (CS.sub.0) between an emitter and a base of a load transistor (Q) in the cascode circuit configuration for compensating a base-emitter voltage (V.sub.BE) of the transistor to eliminate an adverse effect of charging and discharging at a stray capacitor (C) which can be connected between the base and the emitter of the transistor. The high speed electronic circuit can be applied to an; circuit, a level shift circuit, a level shift discrimination circuit, a signal distribution circuit, a signal synthesization circuit and a frequency band control circuit.

    摘要翻译： 高速电子电路具有共源共栅电路结构，并且在共源共栅电路配置中在负载晶体管（Q）的发射极和基极之间提供偏置电流源（CS0），用于补偿基极 - 发射极电压（VBE） 该晶体管消除了可以连接在晶体管的基极和发射极之间的杂散电容器（C）的充电和放电的不利影响。 高速电子电路可应用于; 电平，电平移位电路，电平移位鉴别电路，信号分配电路，信号合成电路和频带控制电路。

    Optical subscriber transmission system and subscriber unit used in such
    4.
    发明授权
    Optical subscriber transmission system and subscriber unit used in such 失效
    光用户传输系统和用户单元使用

    公开(公告)号：US5812295A

    公开(公告)日：1998-09-22

    申请号：US342310

    申请日：1994-11-18

    申请人： Hiroo Kitasagami

    发明人： Hiroo Kitasagami

    IPC分类号： H04B10/00 ,  H04B10/07 ,  H04B10/272

    CPC分类号： H04B10/272

    摘要： An optical subscriber transmission system is formed of an office center unit and a plurality of subscriber units connected to the office center unit in parallel via an optical fiber, in which system a downward signal is transmitted from the office center unit to the plurality of subscriber units via the optical fiber and upward signals are transmitted from the plurality of subscriber units to the office center unit. The optical subscriber transmission system includes a signal level detecting unit for detecting a level of the downward signal from the office center unit which is received by a subscriber unit, and a control circuit for controlling, based on a detected signal level obtained by the signal level detecting unit, an upward signal to be transmitted from the subscriber unit to the office center unit so that a level of the upward signal is decreased in accordance with an increasing of the detected signal level.

    摘要翻译： 光用户传输系统由办公中心单元和多个用户单元组成，多个用户单元经由光纤并行连接到办公室中心单元，在该系统中向下信号从办公中心单元发送到多个用户单元 经由光纤将上行信号从多个用户单元发送到办公中心单元。 光用户传输系统包括：信号电平检测单元，用于检测由用户单元接收的来自办公中心单元的向下信号的电平;以及控制电路，用于基于由信号电平获得的检测信号电平 检测单元，将从用户单元发送到办公室中心单元的向上信号，使得根据检测到的信号电平的增加来降低上行信号的电平。