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    DEMODULATOR CIRCUITS FOR AMPLITUDE SHIFT KEYING (ASK) COMMUNICATION DEMODULATION
    38.
    发明公开
    DEMODULATOR CIRCUITS FOR AMPLITUDE SHIFT KEYING (ASK) COMMUNICATION DEMODULATION 审中-公开

    公开(公告)号：US20240014779A1

    公开(公告)日：2024-01-11

    申请号：US18212210

    申请日：2023-06-21

    申请人： Molex Technologies GmbH

    发明人： Bazil Nawaz

    IPC分类号： H03D1/00 ,  H02J50/10

    CPC分类号： H03D1/00 ,  H02J50/10

    摘要： Exemplary embodiments are disclosed of demodulator circuits for amplitude shift keying (ASK) communication demodulation. In an exemplary embodiment, a demodulator circuit is configurable (e.g., modular and/or scalable, etc.) to include any number of levels (one or more N-Levels) of demodulation. Each level of the demodulator circuit includes a peak detector, a bandpass filter, and a lowpass filter and control capacitor(s). The bandpass filter is coupled with and between the peak detector and the lowpass filter and control capacitor(s). Each level of the demodulator circuit may be identical to each other and include the same or similar components (e.g., peak detector, bandpass filter, lowpass filter and control capacitor(s)). And each demodulator circuit level (Level-1, Level-2 . . . Level-N) may be coupled with a summing voltage amplifier. The summing voltage amplifier may be coupled with an adaptive DC-offset and a lowpass filter, which, in turn, is coupled with a microcontroller.

    Demodulator for wireless power transmitter
    40.
    发明授权
    Demodulator for wireless power transmitter 有权
    无线电力变送器解调器

    公开(公告)号：US09577474B2

    公开(公告)日：2017-02-21

    申请号：US14307644

    申请日：2014-06-18

    申请人： ROHM CO., LTD.

    发明人： Masatoshi Watanabe ,  Manabu Miyata ,  Tatsuya Iwasaki ,  Tomoya Morinaga

    IPC分类号： H02J17/00 ,  H03D1/00 ,  H04B5/00

    CPC分类号： H02J50/12 ,  H02J7/025 ,  H02J17/00 ,  H02J50/10 ,  H02J50/70 ,  H02J50/80 ,  H02J50/90 ,  H03D1/00 ,  H04B5/0037 ,  H04B5/0075 ,  H04B5/0093

    摘要： A demodulator is mounted on a wireless power transmitter that conforms to the Qi standard, and demodulates an amplitude modulated signal superimposed on a coil current ICOIL that flows through a primary coil of a transmission antenna, or otherwise on a coil voltage across both ends of the primary coil. Multiple demodulating units are each configured to have respectively different configurations, to operate in parallel, to extract a demodulated component from the coil current ICOIL or otherwise from the coil voltage, and to generate baseband signals as demodulated signals. A signal processing unit employs a baseband signal that is correctly received, from among the multiple baseband signals generated by the multiple demodulating units, based on an error detection result obtained using a checksum.

    摘要翻译： 解调器安装在符合Qi标准的无线电力发射机上，并且解调叠加在流过发射天线的初级线圈的线圈电流ICOIL上的幅度调制信号，或者解调其上的线圈电压 初级线圈 多个解调单元各自被配置为具有分别不同的配置以并行操作，以从线圈电流ICOIL或其他方式从线圈电压提取解调分量，并且生成作为解调信号的基带信号。 信号处理单元基于使用校验和获得的错误检测结果，从多个解调单元生成的多个基带信号中采用正确接收的基带信号。