公开(公告)号：US20210013850A1

公开(公告)日：2021-01-14

申请号：US17037224

申请日：2020-09-29

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Keji CUI ,  Yongli WANG ,  Lei LU

IPC: H03F3/45 ,  H03F1/30 ,  H03F1/22

Abstract: Amplifiers, amplification circuits, and phase shifters, for example, for flexibly adjusting an output phase to thereby meet a requirement of a constant phase on a link in a communications field, are provided. In one aspect, an amplifier includes first, second, and third MOS transistors. The first MOS transistor includes a gate separately coupled to a signal input end and a bias voltage input end, a source coupled to a power supply, and a drain separately coupled to sources of the second and third MOS transistors. A drain of the third MOS transistor is coupled to a ground, and a drain of the second MOS transistor is coupled to a signal output end. The bias voltage input end is configured to receive a bias voltage to adjust a phase difference between an input signal at the signal input end and an output signal at the signal output end.

公开(公告)号：US20140191803A1

公开(公告)日：2014-07-10

申请号：US14141128

申请日：2013-12-26

Applicant: Huawei Technologies Co., Ltd.

Inventor： Zhi ZHANG ,  Xinrong HU ,  Jin RAO ,  Yongli WANG ,  Xiaosheng ZHU ,  Rong PENG

IPC: H03G3/30

CPC classification number: H03G1/0023 ,  H03G3/3036

Abstract: A continuous variable gain amplifier includes an attenuator network, a boost network, a first amplifying network, and a second amplifying network, where the attenuator network generates first differential output signals according to an input signal and sends the first differential output signals to the first amplifying network and the second amplifying network; the first amplifying network and the second amplifying network receive one output of the first differential output signals each, and generate a first final output signal and a second final output signal respectively according to an externally input control voltage; and the boost network receives the first final output signal and the second final output signal, generates second differential output signals, and sends a first output and a second output of the second differential output signals to the first amplifying network and the second amplifying network, respectively

Abstract translation: 连续可变增益放大器包括衰减器网络，升压网络，第一放大网络和第二放大网络，其中衰减器网络根据输入信号产生第一差分输出信号，并将第一差分输出信号发送到第一放大网络 网络和第二放大网络; 第一放大网络和第二放大网络分别接收第一差分输出信号的一个输出，并根据外部输入的控制电压产生第一最终输出信号和第二最终输出信号; 并且升压网络接收第一最终输出信号和第二最终输出信号，产生第二差分输出信号，并且将第二差分输出信号的第一输出和第二输出分别发送到第一放大网络和第二放大网络

公开(公告)号：US20220021363A1

公开(公告)日：2022-01-20

申请号：US17490900

申请日：2021-09-30

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Keji CUI ,  Yongli WANG ,  Lei LU

IPC: H03G1/00 ,  H03F1/22 ,  H03F3/45

Abstract: This application provides a variable gain amplifier and a phased array transceiver, to enable the variable gain amplifier to keep a phase constant when switching a gain, and to enable a gain step to be stable with a frequency. The variable gain amplifier includes an amplification circuit, configured to amplify an input signal; a control circuit, configured to control a gain of the amplification circuit by adjusting an output current of the amplification circuit; and an inductive load and an inductive adjustment circuit, where the inductive load is coupled to a signal output end of the amplification circuit, the inductive adjustment circuit and the inductive load are inductively coupled, and the inductive adjustment circuit is adjustable.