公开(公告)号：US11943085B2

公开(公告)日：2024-03-26

申请号：US17994570

申请日：2022-11-28

Applicant: Huawei Technologies Co., Ltd.

Inventor： Wael Al-Qaq ,  Xiaobao Yu ,  Zhihang Zhang ,  Min Yi

IPC: H04L27/12 ,  H04L25/02 ,  H04L27/20

CPC classification number: H04L27/2092

Abstract: A circuit includes a polar transmitter to generate a radio frequency output from amplitude and phase signal components. The polar transmitter includes an amplifier to combine amplitude and phase signal components. A processor is coupled to the polar transmitter to provide the amplitude and phase signal components. The processor includes: a digital modulation circuit to generate a modulated digital signal including in-phase and quadrature signal components and a correction circuit to calculate and apply a complex digital offset for local oscillator feedthrough of the amplifier. The complex digital offset includes an in-phase offset correction factor and a quadrature offset correction factor.

公开(公告)号：US11516054B2

公开(公告)日：2022-11-29

申请号：US17351779

申请日：2021-06-18

Applicant: Huawei Technologies Co., Ltd.

Inventor： Wael Al-Qaq ,  Xiaobao Yu ,  Zhihang Zhang ,  Min Yi

IPC: H03C3/00 ,  H03K7/06 ,  H04L27/12 ,  H04L27/20

Abstract: A circuit includes a polar transmitter to generate a radio frequency output from amplitude and phase signal components. The polar transmitter includes an amplifier to combine amplitude and phase signal components. A processor is coupled to the polar transmitter to provide the amplitude and phase signal components. The processor includes: a digital modulation circuit to generate a modulated digital signal including in-phase and quadrature signal components and a correction circuit to calculate and apply a complex digital offset for local oscillator feedthrough of the amplifier. The complex digital offset includes an in-phase offset correction factor and a quadrature offset correction factor.

公开(公告)号：US20210314204A1

公开(公告)日：2021-10-07

申请号：US17351779

申请日：2021-06-18

Applicant: Huawei Technologies Co., Ltd.

Inventor： Wael Al-Qaq ,  Xiaobao Yu ,  Zhihang Zhang ,  Min Yi

IPC: H04L27/20

Abstract: A circuit includes a polar transmitter to generate a radio frequency output from amplitude and phase signal components. The polar transmitter includes an amplifier to combine amplitude and phase signal components. A processor is coupled to the polar transmitter to provide the amplitude and phase signal components. The processor includes: a digital modulation circuit to generate a modulated digital signal including in-phase and quadrature signal components and a correction circuit to calculate and apply a complex digital offset for local oscillator feedthrough of the amplifier. The complex digital offset includes an in-phase offset correction factor and a quadrature offset correction factor.