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公开(公告)号：US12212283B2
公开(公告)日：2025-01-28
申请号：US17733359
申请日：2022-04-29
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Yongchang Yu , Min Yi , Weinan Li
Abstract: This application provides an operational amplifier and a start-up circuit of the operational amplifier. The start-up circuit has the advantages of having a simple structure and consuming less. The operational amplifier includes a multi-stage amplifier and a start-up circuit, where the start-up circuit includes a first start-up transistor and a second start-up transistor. A source of the first start-up transistor and a source of the second start-up transistor are connected to a tail bias node of a first-stage amplifier in the multi-stage amplifier, a gate of the first start-up transistor and a gate of the second start-up transistor are configured to connect to a first bias voltage Vb, and a drain of the first start-up transistor and a drain of the second start-up transistor are connected to input terminals of a second-stage or higher-stage amplifier.
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公开(公告)号：US11563452B2
公开(公告)日：2023-01-24
申请号：US17104732
申请日：2020-11-25
Applicant: Huawei Technologies Co., Ltd.
Abstract: A radio frequency transmitter includes a digital-to-analog converter, an analog baseband processor, and a modulator. The digital-to-analog converter is configured to convert a digital frequency-converted signal into a first analog signal, where the digital frequency-converted signal is obtained by performing digital frequency conversion on a digital baseband signal based on a first frequency signal; the analog baseband processor is configured to perform filtering and gain adjustment on the first analog signal to obtain a second analog signal; and the modulator is configured to perform up conversion based on a second frequency signal and the second analog signal, to obtain a radio frequency signal, where the second frequency signal is determined based on a local frequency signal and the first frequency signal.
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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
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.
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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.
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Patent Agency Ranking
公开(公告)号：USRE49903E1
公开(公告)日：2024-04-02
申请号：US16502959
申请日：2019-07-03
Applicant: Huawei Technologies Co., Ltd.
Inventor： Min Yi , Jian Liang , Nianyong Zhu
CPC classification number: H04B1/126 , H04B1/0057
Abstract: The present invention discloses a radio frequency receiver and a receiving method, where the method includes: performing band splitting on a radio frequency signal of multiple carriers to obtain at least one band signal, and outputting the signal; separately performing filtering and amplification processing on the at least one band signal to obtain at least one processed signal; generating multiple oscillation signals; and selectively receiving a processed signal, of the at least one processed signal, that includes a target carrier; receiving an oscillation signal corresponding to the target carrier; selectively selecting a frequency division ratio from multiple frequency division ratios; using the frequency division ratio to perform frequency division on the received oscillation signal to obtain a local oscillator signal; using the local oscillator signal to perform frequency mixing on the received processed signal that includes the target carrier to obtain a mixed signal.
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公开(公告)号：US09698925B2
公开(公告)日：2017-07-04
申请号：US14821464
申请日：2015-08-07
Applicant: Huawei Technologies Co., Ltd.
Inventor： Min Yi , Jian Liang , Nianyong Zhu
CPC classification number: H04J1/12 , H04B1/0057 , H04B1/006 , H04B1/126 , H04W88/06
Abstract: The present invention discloses a radio frequency receiver and a receiving method, where the method includes: performing band splitting on a radio frequency signal of multiple carriers to obtain at least one band signal, and outputting the signal; separately performing filtering and amplification processing on the at least one band signal to obtain at least one processed signal; generating multiple oscillation signals; and selectively receiving a processed signal, of the at least one processed signal, that includes a target carrier; receiving an oscillation signal corresponding to the target carrier; selectively selecting a frequency division ratio from multiple frequency division ratios; using the frequency division ratio to perform frequency division on the received oscillation signal to obtain a local oscillator signal; using the local oscillator signal to perform frequency mixing on the received processed signal that includes the target carrier to obtain a mixed signal.
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7.发明授权Modulation circuit of digital transmitter, digital transmitter, and signal modulation method 有权数字发射机的调制电路，数字发射机和信号调制方法公开(公告)号：US09444500B2
公开(公告)日：2016-09-13
申请号：US14744142
申请日：2015-06-19
Applicant: Huawei Technologies Co., Ltd.
Inventor： Wufeng Wang , Min Yi , Nianyong Zhu , Bingxuan Mo
CPC classification number: H04B1/0475 , H03L7/00 , H04L7/0331 , H04L7/0337 , H04L27/2092 , H04L27/364 , H04L27/365
Abstract: The present invention relates to a modulation circuit of a digital transmitter, a digital transmitter, and a signal modulation method. The modulation circuit includes: a first synchronizing circuit and a digital modulator, where the first synchronizing circuit separately perform phase delay on a first local-frequency signal or a second local-frequency signal to obtain corresponding delay signals, and perform phase adjustment on a digital baseband signal by using the delay signals, to generate a first adjusted signal and a second adjusted signal; and the digital modulator modulates the first adjusted signal by using the first local-frequency signal, to generate a first radio-frequency signal, and modulates the second adjusted signal by using the second local-frequency signal, to generate a second radio-frequency signal.
Abstract translation: 本发明涉及数字发射机的调制电路，数字发射机和信号调制方法。 调制电路包括：第一同步电路和数字调制器，其中第一同步电路在第一本地频率信号或第二本地频率信号上分别执行相位延迟以获得相应的延迟信号，并对数字 基带信号通过使用延迟信号产生第一调整信号和第二调整信号; 并且所述数字调制器通过使用所述第一本机频率信号来调制所述第一调整信号，以产生第一射频信号，并且通过使用所述第二本机频率信号对所述第二调整信号进行调制，以产生第二射频信号 。
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公开(公告)号：US20210083699A1
公开(公告)日：2021-03-18
申请号：US17104732
申请日：2020-11-25
Applicant: Huawei Technologies Co., Ltd.
Abstract: A radio frequency transmitter includes a digital-to-analog converter, an analog baseband processor, and a modulator. The digital-to-analog converter is configured to convert a digital frequency-converted signal into a first analog signal, where the digital frequency-converted signal is obtained by performing digital frequency conversion on a digital baseband signal based on a first frequency signal; the analog baseband processor is configured to perform filtering and gain adjustment on the first analog signal to obtain a second analog signal; and the modulator is configured to perform up conversion based on a second frequency signal and the second analog signal, to obtain a radio frequency signal, where the second frequency signal is determined based on a local frequency signal and the first frequency signal.
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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
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.
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