Control of envelope tracker PMIC
    1.
    发明授权

    公开(公告)号:US10749476B2

    公开(公告)日:2020-08-18

    申请号:US16387986

    申请日:2019-04-18

    Abstract: A tracker circuit configured to provide a variable supply voltage to a power amplifier (PA) circuit is disclosed. The tracker circuit includes a state machine circuit comprising a plurality of states mapped in accordance with transitions associated with a mapping scheme. In some embodiments, the plurality of states of the state machine circuit identify one or more operational modes associated with the tracker circuit, wherein at least one operational mode comprises one or more voltage levels respectively associated therewith. In some embodiments, the one or more operational modes includes at least two active operational modes. In some embodiments, a transition between the one or more operational modes of the tracker circuit is controlled by a digital selection signal received from a digital communication interface associated therewith.

    Calibrating RF path delay and IQ phase imbalance for polar transmit system
    2.
    发明授权
    Calibrating RF path delay and IQ phase imbalance for polar transmit system 有权
    校准极地传输系统的RF路径延迟和IQ相位不平衡

    公开(公告)号:US09413583B2

    公开(公告)日:2016-08-09

    申请号:US14575733

    申请日:2014-12-18

    Abstract: A method of calibrating parameters for a polar transmitter (Polar TX) system includes receiving phase information derived from transmission information in a Polar TX for producing a radio frequency (RF) broadcast signal. An Inphase local oscillator (LO_I) signal and a quadrature phase local oscillator (LO_Q) signal are derived from a combination of a first signal and the phase information using a digital phase lock loop. A feedback receiver (FBR) receives the RF broadcast signal provided by the Polar TX. The LO_I signal and the LO_Q signal are mixed with the RF broadcast signal to obtain mixer output signals. RF path delay and IQ phase imbalance are concurrently determined as a function of the first signal and of the mixer output signals.

    Abstract translation: 校正极性发射机(Polar TX)系统的参数的方法包括:接收由Polar TX中的传输信息导出的用于产生射频(RF)广播信号的相位信息。 使用数字锁相环从第一信号和相位信息的组合导出同相本地振荡器(LO_I)信号和正交相位本地振荡器(LO_Q)信号。 反馈接收机(FBR)接收由Polar TX提供的RF广播信号。 LO_I信号和LO_Q信号与RF广播信号混合,以获得混频器输出信号。 RF路径延迟和IQ相位不平衡同时被确定为第一信号和混频器输出信号的函数。

    CONTROL OF ENVELOPE TRACKER PMIC
    3.
    发明申请

    公开(公告)号:US20190245489A1

    公开(公告)日:2019-08-08

    申请号:US16387986

    申请日:2019-04-18

    Abstract: A tracker circuit configured to provide a variable supply voltage to a power amplifier (PA) circuit is disclosed. The tracker circuit includes a state machine circuit comprising a plurality of states mapped in accordance with transitions associated with a mapping scheme. In some embodiments, the plurality of states of the state machine circuit identify one or more operational modes associated with the tracker circuit, wherein at least one operational mode comprises one or more voltage levels respectively associated therewith. In some embodiments, the one or more operational modes includes at least two active operational modes. In some embodiments, a transition between the one or more operational modes of the tracker circuit is controlled by a digital selection signal received from a digital communication interface associated therewith.

    Control of envelope tracker PMIC
    4.
    发明授权

    公开(公告)号:US10291184B1

    公开(公告)日:2019-05-14

    申请号:US15866951

    申请日:2018-01-10

    Abstract: A tracker circuit configured to provide a variable supply voltage to a power amplifier (PA) circuit is disclosed. The tracker circuit comprises a predefined state machine circuit comprising a plurality of states mapped in accordance with transitions associated with a predefined mapping scheme. In some embodiments, the plurality of states of the state machine circuit identify one or more operational modes associated with the tracker circuit, wherein the one or more operational modes comprises one or more voltage levels respectively associated therewith. In some embodiments, the one or more operational modes comprises at least two active operational modes. In some embodiments, a transition between the one or more operational modes of the tracker circuit is dictated by a decoding of a digital selection signal received from a digital communication interface associated therewith.

    Feed-forward envelope tracking
    5.
    发明授权

    公开(公告)号:US10090808B1

    公开(公告)日:2018-10-02

    申请号:US15474186

    申请日:2017-03-30

    Abstract: An envelope tracking system for controlling a power amplifier supply voltage includes envelope circuitry and a feed forward digital to analog converter (DAC) circuitry. The envelope circuitry is configured to generate a target envelope signal based on a selected power amplifier supply voltage. The feed forward DAC circuitry includes a voltage source circuitry and a selector circuitry. The voltage source circuitry is configured to generate a plurality of voltages. The selector circuitry is configured to select one of the plurality of voltages based at least on the target envelope signal. The feed forward DAC circuitry is configured to provide the selected voltage to a supply voltage input of a power amplifier that amplifies a radio frequency (RF) transmit signal.

    Feed-Forward Envelope Tracking
    6.
    发明申请

    公开(公告)号:US20180287563A1

    公开(公告)日:2018-10-04

    申请号:US15474186

    申请日:2017-03-30

    Abstract: An envelope tracking system for controlling a power amplifier supply voltage includes envelope circuitry and a feed forward digital to analog converter (DAC) circuitry. The envelope circuitry is configured to generate a target envelope signal based on a selected power amplifier supply voltage. The feed forward DAC circuitry includes a voltage source circuitry and a selector circuitry. The voltage source circuitry is configured to generate a plurality of voltages. The selector circuitry is configured to select one of the plurality of voltages based at least on the target envelope signal. The feed forward DAC circuitry is configured to provide the selected voltage to a supply voltage input of a power amplifier that amplifies a radio frequency (RF) transmit signal.

    FEED-FORWARD ENVELOPE TRACKING
    8.
    发明申请

    公开(公告)号:US20190036486A1

    公开(公告)日:2019-01-31

    申请号:US16140991

    申请日:2018-09-25

    Abstract: An envelope tracking system for controlling a power amplifier supply voltage includes envelope circuitry and a feed forward digital to analog converter (DAC) circuitry. The envelope circuitry is configured to generate a target envelope signal based on a selected power amplifier supply voltage. The feed forward DAC circuitry includes a voltage source circuitry and a selector circuitry. The voltage source circuitry is configured to generate a plurality of voltages. The selector circuitry is configured to select one of the plurality of voltages based at least on the target envelope signal. The feed forward DAC circuitry is configured to provide the selected voltage to a supply voltage input of a power amplifier that amplifies a radio frequency (RF) transmit signal.

    CALIBRATING RF PATH DELAY AND IQ PHASE IMBALANCE FOR POLAR TRANSMIT SYSTEM
    10.
    发明申请
    CALIBRATING RF PATH DELAY AND IQ PHASE IMBALANCE FOR POLAR TRANSMIT SYSTEM 审中-公开
    校准RF路径延迟和智能相位不平等的极地发射系统

    公开(公告)号:US20160352439A1

    公开(公告)日:2016-12-01

    申请号:US15231379

    申请日:2016-08-08

    Abstract: A method of calibrating parameters for a polar transmitter (Polar TX) system includes receiving phase information derived from transmission information in a Polar TX for producing a radio frequency (RF) broadcast signal. An Inphase local oscillator (LO_I) signal and a quadrature phase local oscillator (LO_Q) signal are derived from a combination of a first signal and the phase information using a digital phase lock loop. A feedback receiver (FBR) receives the RF broadcast signal provided by the Polar TX. The LO_I signal and the LO_Q signal are mixed with the RF broadcast signal to obtain mixer output signals. RF path delay and IQ phase imbalance are concurrently determined as a function of the first signal and of the mixer output signals.

    Abstract translation: 校正极性发射机(Polar TX)系统的参数的方法包括:接收由Polar TX中的传输信息导出的用于产生射频(RF)广播信号的相位信息。 使用数字锁相环从第一信号和相位信息的组合导出同相本地振荡器(LO_I)信号和正交相位本地振荡器(LO_Q)信号。 反馈接收机(FBR)接收由Polar TX提供的RF广播信号。 LO_I信号和LO_Q信号与RF广播信号混合,以获得混频器输出信号。 RF路径延迟和IQ相位不平衡同时被确定为第一信号和混频器输出信号的函数。

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