Method and device for processing mismatches between two quadrature paths of a chain of a reception adapted for example to the reception of a signal modulated according to a modulation of the OFDM type
    11.
    发明申请
    Method and device for processing mismatches between two quadrature paths of a chain of a reception adapted for example to the reception of a signal modulated according to a modulation of the OFDM type 有权
    用于处理接收链的两个正交路径之间的错配的方法和装置,例如适用于根据OFDM类型的调制调制的信号的接收

    公开(公告)号:US20050208895A1

    公开(公告)日:2005-09-22

    申请号:US10919796

    申请日:2004-08-17

    CPC classification number: H04L5/06 H04L27/265 H04L2025/03414 H04L2025/03522

    Abstract: In a calibration phase for a tuner of the DZIF type, N calibration frequency signals are generated at an input of a filter. The N calibration frequency signals have N calibration frequencies corresponding respectively after transposition to N analysis frequencies at an input of a Fourier transform. An amplitude and a phase of a corresponding point at an output of the Fourier transform are calculated for each analysis frequency. In a reception phase, each of the outputs of the Fourier transform is corrected with an inverse of the corresponding amplitude and opposite the corresponding phase calculated in the calibration phase.

    Abstract translation: 在DZIF型调谐器的校准阶段,N个校准频率信号在滤波器的输入端产生。 N个校准频率信号在傅立叶变换的输入处转换到N个分析频率之后分别具有N个校准频率。 对于每个分析频率计算在傅立叶变换的输出处的对应点的振幅和相位。 在接收阶段,傅立叶变换的每个输出用对应的幅度的倒数校正,与在校准阶段计算出的相应的相位相反。

    Calibration in a radio frequency transmission module
    14.
    发明授权
    Calibration in a radio frequency transmission module 有权
    在射频传输模块中进行校准

    公开(公告)号:US08238469B2

    公开(公告)日:2012-08-07

    申请号:US12061088

    申请日:2008-04-02

    CPC classification number: H03D7/166 H04L27/38 H04L27/3863 H04L27/3872

    Abstract: A radio frequency transmission module is adapted to generate a first signal to be transmitted and to convert the signal to a radio frequency carrier for its radio transmission, in an operational phase, and is adapted to generate a second signal and to convert the second signal to the radio frequency carrier, in a calibration phase. The module includes a calibration unit having a subsampler adapted to subsample the second converted signal and a calculation unit adapted to calculate Fourier Transform coefficients representative of the signal delivered by the subsampler, for the purposes of processing the first signal to be transmitted, in the operational phase, as a function of at least some of the Fourier coefficients calculated in the calibration phase.

    Abstract translation: 射频传输模块适于产生待发射的第一信号,并在操作阶段将该信号转换成用于其无线电传输的射频载波,并适于产生第二信号并将第二信号转换为 在射频载波中,在校准阶段。 模块包括具有适于对第二转换信号进行二次采样的二次采样器的校准单元,以及计算单元,用于计算代表由二次采样器传送的信号的傅里叶变换系数,以便在操作中处理要发送的第一信号 作为在校准阶段中计算的至少一些傅立叶系数的函数的相位。

    Electronic component allowing the decoding of digital terrestrial or cable television signals
    15.
    发明授权
    Electronic component allowing the decoding of digital terrestrial or cable television signals 有权
    允许数字地面或有线电视信号解码的电子元件

    公开(公告)号:US07796197B2

    公开(公告)日:2010-09-14

    申请号:US10819086

    申请日:2004-04-06

    CPC classification number: H03D7/161 H04N5/4401 H04N21/426 H04N21/6112

    Abstract: An integrated circuit includes a dual-conversion tuner, firstly upconverting so as to place a signal outside the reception band, then downconverting with zero intermediate frequency. A bulk acoustic wave type filter is calibrated in such a way as to accurately determine its central frequency. This filter is positioned between the two frequency transposition stages of the tuner. After baseband filtering, the signals are digitized then processed in a digital block BNM which includes a channel decoding module.

    Abstract translation: 集成电路包括双转换调谐器,首先上变频以将信号放在接收频带外,然后以零中频下变频。 体积声波型滤波器被校准,以便准确地确定其中心频率。 该滤波器位于调谐器的两个频率转置级之间。 在基带滤波之后,信号被数字化,然后在包括信道解码模块的数字块BNM中进行处理。

    Electronic component notably for decoding signals modulated by a digital quadrature modulation over a large number of orthogonal carriers
    16.
    发明授权
    Electronic component notably for decoding signals modulated by a digital quadrature modulation over a large number of orthogonal carriers 有权
    电子部件特别用于解码通过大量正交载波上的数字正交调制调制的信号

    公开(公告)号:US07474693B2

    公开(公告)日:2009-01-06

    申请号:US10915959

    申请日:2004-08-11

    CPC classification number: H04B1/403 H04B1/54

    Abstract: An input/output terminal receives a multi-channel analog signal within a predetermined frequency band, and transmits a single-channel analog signal within this frequency band. A tuning module has a reception channel based upon a two-stage down conversion to baseband, and is connected between the input/output terminal and an analog-to-digital conversion stage. A transmission channel based upon a two-stage up conversion is connected between a digital-to-analog conversion stage and the input/output terminal. The two channels include a common filter of the bulk acoustic wave type or of the surface acoustic wave type between the two frequency transposition stages of the two channels. A digital reception unit is connected to the output of the analog-to-digital conversion stage, and a digital transmission unit is connected to the input of the digital-to-analog conversion stage.

    Abstract translation: 输入/输出端子在预定频带内接收多通道模拟信号,并在该频带内发送单通道模拟信号。 调谐模块具有基于对基带的两级下变频的接收通道,并且连接在输入/输出端子和模数转换级之间。 基于两级上变频的传输通道连接在数模转换级与输入/输出端之间。 两个通道包括在两个通道的两个频率转置级之间的体声波类型或表面声波类型的公共滤波器。 数字接收单元连接到模数转换级的输出,数字传输单元连接到数模转换级的输入端。

    CALIBRATION IN A RADIO FREQUENCY TRANSMISSION MODULE
    17.
    发明申请
    CALIBRATION IN A RADIO FREQUENCY TRANSMISSION MODULE 有权
    无线电频率传输模块中的校准

    公开(公告)号:US20080253473A1

    公开(公告)日:2008-10-16

    申请号:US12061088

    申请日:2008-04-02

    CPC classification number: H03D7/166 H04L27/38 H04L27/3863 H04L27/3872

    Abstract: A radio frequency transmission module is adapted to generate a first signal to be transmitted and to convert the signal to a radio frequency carrier for its radio transmission, in an operational phase, and is adapted to generate a second signal and to convert the second signal to the radio frequency carrier, in a calibration phase. The module includes a calibration unit having a subsampler adapted to subsample the second converted signal and a calculation unit adapted to calculate Fourier Transform coefficients representative of the signal delivered by the subsampler, for the purposes of processing the first signal to be transmitted, in the operational phase, as a function of at least some of the Fourier coefficients calculated in the calibration phase.

    Abstract translation: 射频传输模块适于产生待发射的第一信号,并在操作阶段将该信号转换成用于其无线电传输的射频载波,并适于产生第二信号并将第二信号转换为 在射频载波中,在校准阶段。 模块包括具有适于对第二转换信号进行二次采样的二次采样器的校准单元,以及计算单元,用于计算代表由二次采样器传送的信号的傅里叶变换系数,以便在操作中处理要发送的第一信号 作为在校准阶段中计算的至少一些傅立叶系数的函数的相位。

    Electronic component notably for decoding signals modulated by a digital quadrature modulation over a large number of orthogonal carriers
    20.
    发明申请
    Electronic component notably for decoding signals modulated by a digital quadrature modulation over a large number of orthogonal carriers 有权
    电子部件特别用于解码通过大量正交载波上的数字正交调制调制的信号

    公开(公告)号:US20050058214A1

    公开(公告)日:2005-03-17

    申请号:US10915959

    申请日:2004-08-11

    CPC classification number: H04B1/403 H04B1/54

    Abstract: An input/output terminal receives a multi-channel analog signal within a predetermined frequency band, and transmits a single-channel analog signal within this frequency band. A tuning module has a reception channel based upon a two-stage down conversion to baseband, and is connected between the input/output terminal and an analog-to-digital conversion stage. A transmission channel based upon a two-stage up conversion is connected between a digital-to-analog conversion stage and the input/output terminal. The two channels include a common filter of the bulk acoustic wave type or of the surface acoustic wave type between the two frequency transposition stages of the two channels. A digital reception unit is connected to the output of the analog-to-digital conversion stage, and a digital transmission unit is connected to the input of the digital-to-analog conversion stage.

    Abstract translation: 输入/输出端子在预定频带内接收多通道模拟信号,并在该频带内发送单通道模拟信号。 调谐模块具有基于对基带的两级下变频的接收通道,并且连接在输入/输出端子和模数转换级之间。 基于两级上变频的传输通道连接在数模转换级与输入/输出端之间。 两个通道包括在两个通道的两个频率转置级之间的体声波类型或表面声波类型的公共滤波器。 数字接收单元连接到模数转换级的输出,数字传输单元连接到数模转换级的输入端。

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