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    FEEDFORWARD AUTOMATIC GAIN CORRECTION
    11.
    发明申请
    FEEDFORWARD AUTOMATIC GAIN CORRECTION 有权
    自动增益自动校正

    公开(公告)号：US20120129478A1

    公开(公告)日：2012-05-24

    申请号：US13299581

    申请日：2011-11-18

    Applicant: Henk Ten Pierick ,  Gertjan Groot Hulze ,  Erik Keukens

    Inventor： Henk Ten Pierick ,  Gertjan Groot Hulze ,  Erik Keukens

    IPC: H04B1/16 ,  H03G3/20

    CPC classification number: H03G3/3052 ,  H03G3/301 ,  H03G2201/202 ,  H03G2201/302 ,  H03G2201/606

    Abstract: An automatic gain control circuit is provided for an input signal in the form of a dc reference level and a superposed amplitude modulated ac data signal. A feedforward AGC loop has a low pass filter for deriving the level of attenuation from the attenuated dc reference level. A multiplier value (G) is based on the reciprocal of the level of attenuation (α) and this multiplier enables an output signal to be generated comprising a constant multiple (DG) of the input signal.

    Abstract translation: 为直流基准电平和重叠幅度调制交流数据信号形式的输入信号提供自动增益控制电路。 前馈AGC环路具有用于从衰减的直流参考电平导出衰减电平的低通滤波器。 乘法器值（G）基于衰减电平（α）的倒数，并且该乘法器使得能够产生包括输入信号的恒定倍数（DG）的输出信号。

    RADIO RECEIVING DEVICE AND TRANSMITTING AND RECEIVING DEVICE
    12.
    发明申请
    RADIO RECEIVING DEVICE AND TRANSMITTING AND RECEIVING DEVICE 审中-公开

    公开(公告)号：US20180287647A1

    公开(公告)日：2018-10-04

    申请号：US15924717

    申请日：2018-03-19

    Applicant: Panasonic Corporation

    Inventor： YOHEI MORISHITA ,  TAKENORI SAKAMOTO

    IPC: H04B1/16 ,  H03G3/30

    CPC classification number: H04B1/16 ,  H03G3/3042 ,  H03G3/3052 ,  H03G3/3078 ,  H03G2201/302 ,  H03G2201/307 ,  H04B1/0028

    Abstract: A gain controller sets a gain code indicating an optimum gain, a cutoff frequency code indicating a cutoff frequency, and a number of bits code indicating a number of bits. An AEQ/VGA gain controller sets a frequency characteristic code indicating a frequency characteristic, a gain code indicating a gain after correction, and a number of bits code indicating a number of bits. An AEQ/VGA amplifies a baseband received signal on the basis of a gain code and corrects a frequency characteristic of the baseband received signal on the basis of a frequency characteristic code. An HPF cuts off a band below a cutoff frequency of an output signal from the AEQ/VGA on the basis of a cutoff frequency code. An ADC quantizes an output signal from the HPF using a number of bits based on a number of bits code and generates a digital received signal.

    RECEPTION AMPLITUDE CORRECTION CIRCUIT, RECEPTION AMPLITUDE CORRECTION METHOD, AND RECEIVER USING THE SAME
    14.
    发明公开
    RECEPTION AMPLITUDE CORRECTION CIRCUIT, RECEPTION AMPLITUDE CORRECTION METHOD, AND RECEIVER USING THE SAME 审中-公开
    电路和方法，用于校正所述接收振幅和接收器，以便

    公开(公告)号：EP1944871A1

    公开(公告)日：2008-07-16

    申请号：EP06810353.0

    申请日：2006-09-14

    Applicant: NEC Corporation

    Inventor： ICHIHARA, Masaki

    IPC: H04B1/16

    CPC classification number: H03G3/3089 ,  H03G3/001 ,  H03G3/3052 ,  H03G2201/302 ,  H04B1/30

    Abstract: Input average levels and output average levels of digital channel filters 217 and 218 are computed in amplitude calculation circuits 101 and 102. In a gain difference calculation circuit 103, a gain difference of the input levels and the output levels is computed as a multiplier α so that a difference between the input levels and the output levels are eliminated or adjusted to be within a certain value. The outputs of the digital channel filters 217 and 218 are multiplied by the multiplier α in multiplier units 104 and 105. The multiplication results are outputted as corrected digital signals to a subsequent digital signal processing circuit.

    Abstract translation: 输入平均水平和数字信道滤波器217和218输出的平均电平被计算在振幅计算电路101和102的增益差计算电路103，输入电平与输出电平的增益差被计算为一个乘法器以便± 做了输入电平和输出电平之间的差被消除或调整为一定值之内。 在乘法器单元的数字信道滤波器217和218的输出相乘由乘法器±104个105的相乘结果的输出作为校正的数字信号到随后的数字信号处理电路。

    受信振幅補正回路及び受信振幅補正方法並びにそれを用いた受信機
    16.
    发明申请
    受信振幅補正回路及び受信振幅補正方法並びにそれを用いた受信機 审中-公开
    接收振幅校正电路，接收振幅校正方法和使用它的接收器

    公开(公告)号：WO2007032550A1

    公开(公告)日：2007-03-22

    申请号：PCT/JP2006/318665

    申请日：2006-09-14

    Applicant: 日本電気株式会社 ,  市原 正貴

    Inventor： 市原 正貴

    IPC: H04B1/16 ,  H03G3/30

    CPC classification number: H03G3/3089 ,  H03G3/001 ,  H03G3/3052 ,  H03G2201/302 ,  H04B1/30

    Abstract: ディジタルチャンネルフィルタ２１７，２１８の入力平均レベル、出力平均レベルを振幅計算回路１０１，１０２でそれぞれ算出し、それらの差が無いように、または一定差となるように、利得差計算回路１０３で入力レベルと出力レベルの利得差を乗数αとして算出する。乗算器１０４，１０５により乗数αをディジタルチャンネルフィルタ２１７，２１８の出力に乗算し、この乗算結果を補正後のディジタル信号として後段のディジタル信号処理回路へ出力する。

    Abstract translation: 幅度计算电路（101,102）计算数字信道滤波器（217,218）的输入和输出平均电平，增益差计算电路（103）计算输入和输出的增益之间的差值作为乘数（a） 水平使得差值将为零或恒定。 乘法器（104,105）将数字通道滤波器（217,218）的输出乘以乘数（a），并将乘法结果作为校正数字信号输出到下一级的数字信号处理电路。

    MODULATOR, TRANSMITTER, TRANSCEIVER AND METHOD OF OPERATING A TRANSCEIVER
    17.
    发明申请
    MODULATOR, TRANSMITTER, TRANSCEIVER AND METHOD OF OPERATING A TRANSCEIVER 审中-公开
    调制器，发射器，收发器和操作收发器的方法

    公开(公告)号：WO2006082556A2

    公开(公告)日：2006-08-10

    申请号：PCT/IB2006/050328

    申请日：2006-01-31

    Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V. ,  MOORE, Paul, A. ,  MINNIS, Brian, J.

    Inventor： MOORE, Paul, A. ,  MINNIS, Brian, J.

    CPC classification number: H03G3/004 ,  H03F1/0205 ,  H03F1/0222 ,  H03G3/3042 ,  H03G2201/103 ,  H03G2201/202 ,  H03G2201/302 ,  H03G2201/307 ,  H04B1/0475

    Abstract: A modulator (100) for producing a modulated carrier signal in a radio transmitter and suitable for coupling to a power amplifier (40) whose output power is controllable by a DC supply voltage. The modulator (100) comprises quadrature generation means (110) for generating baseband in-phase (I) and quadrature-phase (Q) signal components for a non-constant envelope modulation scheme from a base band data signal, means (30, 32) for scaling the I and Q signal components by a scaling factor for effecting transmitter power control, quadrature modulation means (34 for modulating a carrier signal with the I and Q signal components, and power supply control means (120) for generating, from a baseband signal prior to modulation of the carrier, a power supply control signal which tracks the envelope of the modulated carrier signal for controlling a DC supply voltage of the power amplifier (40). The modulator (100) may comprise additional modes of operation encompassing peak envelope tracking, constant envelope modulation, and envelope elimination and restoration.

    Abstract translation: 一种调制器（100），用于在无线电发射机中产生调制的载波信号，并且适于耦合到功率放大器（40），功率放大器的输出功率由直流电源电压控制。 调制器（100）包括用于从基带数据信号产生用于非恒定包络调制方案的基带同相（I）和正交相位（Q）信号分量的正交产生装置（110），装置（30,32 ）用于通过用于实现发射机功率控制的缩放因子来缩放I和Q信号分量，正交调制装置（34用于利用I和Q信号分量调制载波信号）和电源控制装置（120），用于从 在调制载波之前的基带信号，跟踪用于控制功率放大器（40）的DC电源电压的调制载波信号的包络的电源控制信号，调制器（100）可以包括额外的操作模式，包括峰值 包络跟踪，恒定包络调制和包络消除和恢复。

    AGC system, AGC method, and receiver using the AGC system
    20.
    发明公开
    AGC system, AGC method, and receiver using the AGC system 审中-公开
    自动增益控制系统中，自动增益控制方法和接收器具有自动增益控制系统

    公开(公告)号：EP1542358A1

    公开(公告)日：2005-06-15

    申请号：EP04029197.3

    申请日：2004-12-09

    Applicant: NEC CORPORATION

    Inventor： Terao, Kenji

    IPC: H03G3/30

    CPC classification number: H03G3/3078 ,  H03G3/3068 ,  H03G2201/103 ,  H03G2201/202 ,  H03G2201/302 ,  H03G2201/307

    Abstract: In a slot format of a received signal, AGC gain update timings (t1 to t4) are shifted every time to disperse and reduce an influence of a noise attributable to a direct current component specific to direct conversion which is accompanied by AGC gain update. In particular, in the case where each of slots in the received signal includes an information portion (data) having a larger code correcting capability and an information portion having a smaller code correcting capability (TPC (transmission power control), TFCI (transport format combination indicator), PILOT), the AGC gain update timing is generated while being shifted in the former information portion, thereby reduce the influence of the noise. When the amount of shift of the AGC gain update timing is set to be larger than that of one symbol of the received signal, the influence of the noise accompanied by the AGC gain update is further reduced.

    Abstract translation: 在接收信号的时隙格式，AGC增益更新定时（T1到T4）被移位每分散和减少的噪声的影响时间属性能够专用于直接变换的所有直流分量这伴随着AGC增益更新。 特别是，在其中每个在接收信号的时隙包括在具有较大码校正能力和在具有较小的代码校正能力信息部分（TPC（发送功率控制）信息部分（数据）的情况下，TFCI（传输格式组合 指示器），PILOT），则同时在部分前信息被移动产生的AGC增益的更新定时，由此降低噪声的影响。 当AGC增益更新定时的偏移量被设定为比接收信号的一个符号的宽度，由AGC增益更新伴随的噪声的影响进一步减小。

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