公开(公告)号：US5900771A

公开(公告)日：1999-05-04

申请号：US764524

申请日：1996-12-12

申请人： Duncan J. Bremner

发明人： Duncan J. Bremner

IPC分类号： H03H11/40 ,  H03K5/13 ,  H03G3/02

CPC分类号： H03K5/13 ,  H03H11/405

摘要： A capacitive multiplier circuit for an integrated circuit includes a capacitor coupled between a first node and a second node. A current source is coupled to provide a controlling current to the second node. A first current path shunts the first node and a second current path shunts the second node. The first current path is a first transistor having its conductance path connected between the first node and the substrate and its control electrode connected to the first node. The second current path is a second transistor having its conductance path connected between the second node and the substrate and its control electrode connected to the first node. The current ratio between the two current paths will be determined by the relative areas of the respective conductance paths.

摘要翻译： 用于集成电路的电容倍增器电路包括耦合在第一节点和第二节点之间的电容器。 电流源被耦合以向第二节点提供控制电流。 第一当前路径分流第一节点并且第二当前路径分流第二节点。 第一电流路径是其导电路径连接在第一节点和衬底之间并且其控制电极连接到第一节点的第一晶体管。 第二电流路径是第二晶体管，其导电路径连接在第二节点和衬底之间，其控制电极连接到第一节点。 两个电流路径之间的电流比将由相应电导路径的相对面积决定。

公开(公告)号：US5598467A

公开(公告)日：1997-01-28

申请号：US353095

申请日：1994-12-09

申请人： Duncan J. Bremner ,  Roger K. Benton ,  James B. Wieser

发明人： Duncan J. Bremner ,  Roger K. Benton ,  James B. Wieser

IPC分类号： H04M1/58 ,  H04M1/76

CPC分类号： H04M1/585 ,  H04M1/76

摘要： A signal interface circuit with selectable signal interface parameters for a telephone subscriber line includes an impedance circuit having a selectable impedance value, signal terminals having an associated, definable termination impedance, a transmitter circuit having a definable transmitter transfer function and a receiver circuit having a definable receiver transfer function. The signal terminals connect to an external signal line pair having an associated line impedance for conducting outgoing and incoming signals therefrom and thereto, respectively. The transmitter circuit receives the outgoing signal from the signal terminals and provides a transmit signal in accordance with its transmitter transfer function. The receiver circuit, which includes a differential transconductance amplifier, receives an input signal and the transmit signal and provides the incoming signal to the signal terminals in accordance with its receiver transfer function. The termination impedance, transmitter transfer function and receiver transfer function are all defined by the selectable impedance, with the termination impedance defined to match the line impedance.

摘要翻译： 具有用于电话用户线路的可选信号接口参数的信号接口电路包括具有可选阻抗值的阻抗电路，具有相关联的可定义终端阻抗的信号端子，具有可定义的发射机传输功能的发射机电路和具有可定义的可定义的接收机电路 接收机传递功能。 信号端子连接到具有相关联的线路阻抗的外部信号线对，分别用于传送和输入信号。 发射机电路接收来自信号终端的输出信号，并根据发射机传输功能提供发射信号。 包括差分跨导放大器的接收器电路接收输入信号和发送信号，并根据其接收器传递函数向信号端子提供输入信号。 终端阻抗，发射机传输功能和接收机传输功能都由可选阻抗定义，终端阻抗定义为匹配线路阻抗。

公开(公告)号：US07266302B2

公开(公告)日：2007-09-04

申请号：US10353426

申请日：2003-01-28

申请人： Duncan J. Bremner ,  Finn Helmer ,  Eivind Johansen

发明人： Duncan J. Bremner ,  Finn Helmer ,  Eivind Johansen

IPC分类号： H04B10/00

CPC分类号： H04B10/2503

摘要： An optical network may be configured dynamically so that a given channel wavelength can operate in either direction over a fiber in a network. Thus, network providers can provision bandwidth according to the traffic characteristics of the network link in question. A plurality of transceiver modules on either side of a fiber may be switched from a transmit mode to a receive mode depending on the desired direction of the channel.

摘要翻译： 可以动态地配置光网络，使得给定的信道波长可以在网络中的光纤上在任一方向上操作。 因此，网络提供商可以根据所讨论的网络链路的流量特性来提供带宽。 根据信道的期望方向，光纤的任一侧上的多个收发器模块可以从发送模式切换到接收模式。