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    Distributed radio frequency communication systems for automotive
    1.
    发明授权
    Distributed radio frequency communication systems for automotive 有权

    公开(公告)号：US12160257B2

    公开(公告)日：2024-12-03

    申请号：US17809369

    申请日：2022-06-28

    Applicant: Skyworks Solutions, Inc.

    Inventor： Sabah Khesbak ,  Mark Alan Richey ,  Ari T Vauhkonen ,  David Richard Pehlke ,  Kimmo J. Salmela

    IPC: H04B1/3822 ,  H04B1/40

    Abstract: Distributed radio frequency (RF) communication systems for automotive are disclosed herein. In certain embodiments, an RF communication system for an automobile includes an RF module located close to an antenna to satisfy a specified output power with small insertion loss. Additionally, the baseband processor is placed remotely from the RF module in a different area of the automobile to provide a lower temperature environment. Additionally, the RF module communicates with the baseband processor in a digital format eliminating the need for higher cost cabling (for instance, due to higher noise immunity arising from using digital signaling) and using digital transfer cabling, which can already be present in the automobile for other purposes. The RF module can include an RF front-end (RFFE) and a transceiver used for providing frequency conversion, for instance, between RF and baseband.

    Apparatus and methods for envelope tracking
    3.
    发明授权
    Apparatus and methods for envelope tracking 有权

    公开(公告)号：US11595005B2

    公开(公告)日：2023-02-28

    申请号：US17247707

    申请日：2020-12-21

    Applicant: Skyworks Solutions, Inc.

    Inventor： Florinel G. Balteanu ,  Sabah Khesbak ,  Serge Francois Drogi ,  Shayan Farahvash ,  David Richard Pehlke

    IPC: H03F1/02 ,  H04B1/38 ,  H03F3/24 ,  H04B1/40 ,  H04B1/3827

    Abstract: Envelope tracking systems for power amplifiers are provided herein. In certain embodiments, an envelope tracker is provided for a power amplifier that amplifies an RF signal. The envelope tracker includes a multi-level switching circuit having an output that provides an output current that changes in relation to an envelope signal indicating an envelope of the RF signal when the envelope tracker is operating in an envelope tracking mode. The multi-level switching circuit includes a multi-level supply (MLS) modulator that receives multiple regulated voltages of different voltage levels, and an MLS control circuit that controls the selection of the MLS modulator over time based on the envelope signal. When transitioning the MLS modulator from selection of one regulated voltage level to another regulated voltage level, the MLS control circuit provides a soft transition to gradually switch the regulated voltage levels.

    APPARATUS AND METHODS FOR ENVELOPE TRACKING
    6.
    发明申请
    APPARATUS AND METHODS FOR ENVELOPE TRACKING 有权

    公开(公告)号：US20210218370A1

    公开(公告)日：2021-07-15

    申请号：US17247707

    申请日：2020-12-21

    Applicant: Skyworks Solutions, Inc.

    Inventor： Florinel G. Balteanu ,  Serge Francois Drogi ,  Sabah Khesbak ,  Shayan Farahvash ,  David Richard Pehlke

    IPC: H03F1/02 ,  H03F3/24 ,  H04B1/3827 ,  H04B1/40

    Abstract: Envelope tracking systems for power amplifiers are provided herein. In certain embodiments, an envelope tracker is provided for a power amplifier that amplifies an RF signal. The envelope tracker includes a multi-level switching circuit having an output that provides an output current that changes in relation to an envelope signal indicating an envelope of the RF signal when the envelope tracker is operating in an envelope tracking mode. The multi-level switching circuit includes a multi-level supply (MLS) modulator that receives multiple regulated voltages of different voltage levels, and an MLS control circuit that controls the selection of the MLS modulator over time based on the envelope signal. When transitioning the MLS modulator from selection of one regulated voltage level to another regulated voltage level, the MLS control circuit provides a soft transition to gradually switch the regulated voltage levels.

    Apparatus and methods for envelope tracking systems
    7.
    发明授权
    Apparatus and methods for envelope tracking systems 有权

    公开(公告)号：US10333470B2

    公开(公告)日：2019-06-25

    申请号：US15922641

    申请日：2018-03-15

    Applicant: SKYWORKS SOLUTIONS, INC.

    Inventor： Florinel G. Balteanu ,  Sabah Khesbak ,  Yevgeniy A. Tkachenko ,  David Steven Ripley ,  Robert John Thompson

    IPC: H03F1/02 ,  H03F1/30 ,  H04B1/04 ,  H03F3/21 ,  H03F1/56 ,  H03F3/19 ,  H03F3/24 ,  H03F3/72

    Abstract: Apparatus and methods for envelope tracking systems are provided. In certain configurations, an envelope tracking system includes a digital filter that generates a filtered envelope signal based on a digital envelope signal representing an envelope of a radio frequency signal, a buck converter controllable by the filtered envelope signal and including an output electrically connected to a power amplifier supply voltage, a digital-to-analog converter module including an output electrically connected to the output of the buck converter and that provides an output current, and a digital shaping and delay circuit configured to generate a shaped envelope signal based on shaping the filtered envelope signal. The shaped envelope signal controls a magnitude of the output current, and the digital shaping and delay circuit controls a delay of the shaped envelope signal to align the output of the digital-to-analog converter module and the output of the buck converter.

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