-
公开(公告)号：US08036293B1
公开(公告)日：2011-10-11
申请号：US12322002
申请日：2009-01-28
CPC分类号： H04B3/08 , H03G1/0088 , H04L25/0204 , H04L25/0264 , H04L25/03159 , H04L27/2601 , H04M11/062
摘要： A transceiver having shared and discrete components forming a transmit path and a receive path configured to couple to a communication medium for establishing a multi-tone modulated communication channel thereon. The transceiver includes a line driver component on the transmit path. The line driver is configured to respond to a protocol determination and by configuring at least one of a transmit power level and a transmit bandwidth of the multi-tone modulated communication channel on the communication medium. The line driver includes a plurality of pre-amplifiers each exhibiting a combination of transmit power and bandwidth for amplification of a transmit signal modulated with a selected multi-tone modulation protocol. The line driver also includes a single output amplifier having an output coupled to the communication medium and an input switchably coupled to an output of a selected one of the plurality of pre-amplifiers in response to the protocol determination.
摘要翻译： 具有形成发送路径的共享和离散组件的收发机和被配置为耦合到通信介质以在其上建立多音调调制通信信道的接收路径。 收发器包括发送路径上的线路驱动器组件。 线路驱动器被配置为响应协议确定并且通过在通信介质上配置多音调调制通信信道的发射功率电平和发射带宽中的至少一个来配置。 线路驱动器包括多个前置放大器，每个前置放大器各自表现出发射功率和带宽的组合，用于放大以所选择的多音调制协议调制的发射信号。 线路驱动器还包括具有耦合到通信介质的输出的单个输出放大器和响应于协议确定可切换地耦合到多个前置放大器中的所选择的一个的输出的输入。
-
公开(公告)号：US08947282B1
公开(公告)日：2015-02-03
申请号：US12931018
申请日：2011-01-20
IPC分类号： H03M1/78
摘要： A current controller includes impedance elements coupled to form at least one impedance ladder circuit which exhibits a fixed impedance at an input and current divider steps each differing in a current magnitude by a multiple of three with respect to the current magnitude in an adjacent less significant step. Single pole triple throw (SPTT) switchably couple an associated step in the impedance ladder circuit to one of three outputs. Three discrete current sources or sinks are each coupled to a corresponding one of the outputs of each of the SPTT switches. The digital driver is coupled to each control input of each SPTT switch to additively deliver selected ones of the stepped currents from each step of the impedance ladder circuit to a corresponding selected one of the current sources or sinks.
摘要翻译： 电流控制器包括被耦合以形成至少一个阻抗梯形电路的阻抗元件，该阻抗梯形电路在输入和电流分压器步骤中呈现固定阻抗，每个输入电流和电流分压器步骤在相邻的较不重要的步骤中相对于电流幅度在电流幅度上相差三倍 。 单极三掷（SPTT）可将阻抗梯形电路中的相关步骤切换到三个输出之一。 三个离散电流源或吸收器各自耦合到每个SPTT开关的相应输出之一。 数字驱动器耦合到每个SPTT开关的每个控制输入，以将来自阻抗梯形电路的每个步骤的选定的步进电流相加地递送到相应的所选电流源或汇。
-
公开(公告)号：US08345859B2
公开(公告)日：2013-01-01
申请号：US12009196
申请日：2008-01-16
申请人： Sam Heidari , Sigurd Schelstraete , Aner Tennen , Elango Pakriswamy , Chun-Sup Kim , Luiz Felipe Fuks
发明人： Sam Heidari , Sigurd Schelstraete , Aner Tennen , Elango Pakriswamy , Chun-Sup Kim , Luiz Felipe Fuks
CPC分类号： H04M11/062
摘要： A XDSL line card including an allocator for allocating power to the multi-tone modulated communications on each of the subscriber lines, and for selecting control parameters sufficient to effect communications on each of the subscriber lines at a power level proximate to an allocated power level therefore. The line card also includes configurable components coupled to one another to form a transmit path and a receive path to couple to the digital subscriber lines. The configurable components are responsive to the control parameters selected by the allocator to initialize multi-tone communications over each of the plurality of subscriber lines at a power level proximate the allocated power level.
摘要翻译： 一种XDSL线路卡，包括用于为每个用户线路上的多音调调制通信分配功率的分配器，并且用于选择足以在接近分配的功率电平的功率电平上在每个用户线上进行通信的控制参数 。 线卡还包括彼此耦合的可配置组件以形成发送路径和接收到数字用户线路的接收路径。 可配置组件响应于由分配器选择的控制参数，以在接近分配的功率电平的功率电平上初始化多个用户线中的每一个上的多音通信。
-
公开(公告)号：US20080170609A1
公开(公告)日：2008-07-17
申请号：US12009196
申请日：2008-01-16
申请人： Sam Heidari , Sigurd Schelstraete , Aner Tennen , Elango Pakriswamy , Chun-Sup Kim , Luiz Felipe Fuks
发明人： Sam Heidari , Sigurd Schelstraete , Aner Tennen , Elango Pakriswamy , Chun-Sup Kim , Luiz Felipe Fuks
IPC分类号： H04B1/38
CPC分类号： H04M11/062
摘要： A XDSL line card including an allocator for allocating power to the multi-tone modulated communications on each of the subscriber lines, and for selecting control parameters sufficient to effect communications on each of the subscriber lines at a power level proximate to an allocated power level therefore. The line card also includes configurable components coupled to one another to form a transmit path and a receive path to couple to the digital subscriber lines. The configurable components are responsive to the control parameters selected by the allocator to initialize multi-tone communications over each of the plurality of subscriber lines at a power level proximate the allocated power level.
摘要翻译： 一种XDSL线路卡，包括用于为每个用户线路上的多音调调制通信分配功率的分配器，并且用于选择足以在接近分配的功率电平的功率电平上在每个用户线上进行通信的控制参数 。 线卡还包括彼此耦合的可配置组件以形成发送路径和接收到数字用户线路的接收路径。 可配置组件响应于由分配器选择的控制参数，以在接近分配的功率电平的功率电平上初始化多个用户线中的每一个上的多音通信。
-
公开(公告)号：US06489768B1
公开(公告)日：2002-12-03
申请号：US09695147
申请日：2000-10-23
IPC分类号： G01V300
CPC分类号： G01R33/34 , G01R33/34023 , G01R33/34092 , G01R33/3635
摘要： A double tuned probe for employment in NMR apparatus includes a first resonant circuit of normal phase conductor coupled to the sample and also in communication with a second circuit containing a component in a superconductive phase. Communication between the two circuits supports two RF channels which may be exhibit relative sensitivities in proportion to their relative Q values.
摘要翻译： 用于NMR装置的双调谐探头包括耦合到样品的正相导体的第一谐振电路，并且还与包含超导相中的组分的第二电路连通。 两个电路之间的通信支持两个RF通道，其可以与其相对Q值成比例地显示出相对灵敏度。
-
-
-
-
搜索结果
5 条记录 (耗时 0.01 秒)
