公开(公告)号：US08907724B2

公开(公告)日：2014-12-09

申请号：US13900319

申请日：2013-05-22

Applicant: Huawei Technologies Co., Ltd.

Inventor： Jin Rao ,  Quan Liu ,  Yun Zhu ,  Huajiang Wang

IPC: H03F3/45

CPC classification number: H03G3/004 ,  H03G1/0029

Abstract: The embodiments of the present invention disclose a variable gain amplifier and relate to the field of electronic circuits. The linear-in-dB relationship between an output current and a control voltage of the variable gain amplifier is relatively ideal. The variable gain amplifier includes a fitted differential module group and an offset voltage output module, where the fitted differential module group is configured to output, under the control of a driving voltage and offset voltages, an output current of the variable gain amplifier according to a reference current; and the fitted differential module group includes n fitted differential modules, the n fitted differential modules are cascaded in turn, and n is any positive integer larger than 1.

Abstract translation: 本发明的实施例公开了一种可变增益放大器，涉及电子电路领域。 输出电流与可变增益放大器的控制电压之间的线性dB关系是比较理想的。 可变增益放大器包括一个拟合的差分模块组和一个失调电压输出模块，其中所配置的差分模块组被配置为在驱动电压和偏移电压的控制下输出可变增益放大器的输出电流， 参考电流; 安装的差分模块组包括n个差分模块，n个拟合的差分模块依次级联，n为大于1的任何正整数。

公开(公告)号：US20210352018A1

公开(公告)日：2021-11-11

申请号：US17385161

申请日：2021-07-26

Applicant: Huawei Technologies Co., Ltd.

Inventor： Quan Liu ,  Yawen Tian

IPC: H04L12/803 ,  H04L12/805 ,  H04L12/935 ,  H04L12/721

Abstract: A traffic balancing method includes an Ethernet device sending a query packet carrying load information of each physical port of a logical port of the Ethernet device to a controller. The controller receives the query packet and determines a weight factor of each physical port of the logical port based on the load information. The weight factor of each physical port is positively correlated with an amount of traffic that is of the logical port and that can be shared by each of the physical ports. The controller sends a response packet carrying the weight factor to the Ethernet device. The Ethernet device adjusts, based on the weight factor, traffic sent to each of the physical ports.