具有两种调制模式的发射器及其工作方法

    公开(公告)号:CN1838546A

    公开(公告)日:2006-09-27

    申请号:CN200610067948.4

    申请日:2006-03-14

    Inventor: 潘蒙安

    Abstract: 本发明涉及一种发射器,该发射器包括双模调制器以及连接到该双模调制器的放大器。在调制器的第一调制模式下,双模调制器执行线性调制方案以产生可变包络调制信号。在调制器的第二调制模式下,双模调制器执行非线性调制方案以产生恒定包络调制信号。在第一调制模式下,将该放大器作为线性放大器加偏压,在第二调制模式下,作为非线性放大器加偏压。双模调制器和放大器之间的前馈连接用于指示调制模式的变化以调整放大器的偏压。增加恒定包络调制信号的功率,以在调制器的第一和第二模式下都能保持恒定的放大器工作点。

    AGC回路および無線受信機
    16.
    发明申请
    AGC回路および無線受信機 审中-公开
    AGC电路和无线电接收器

    公开(公告)号:WO2016113819A1

    公开(公告)日:2016-07-21

    申请号:PCT/JP2015/006399

    申请日:2015-12-22

    Abstract:  直流オフセットの発生を抑制するため、高周波信号をベースバンド信号に変換する検波器(50)を備えた無線受信機のための自動利得制御回路において、ベースバンド信号を可変の利得で増幅する増幅回路と当該増幅回路に結合された可変のカットオフ周波数を持つハイパスフィルタとを有する可変利得増幅器(60a,60b)と、利得制御信号を供給する制御部(80)と、高周波信号を一時的に遮断する遮断部(30)とを設ける。制御部(80)は、ハイパスフィルタのカットオフ周波数を高い値から低い値へ切り替える前に高周波信号の遮断を開始するように遮断部(30)を遮断制御信号で制御する。

    Abstract translation: 提供了一种用于无线电接收机的自动增益控制电路,包括将高频信号转换为基带信号的检测器(50)。 为了抑制DC偏移的发生,自动增益控制电路包括:可变增益放大器(60a,60b),每个可变增益放大器具有用于以可变增益放大基带信号的放大电路,并且还具有耦合到 所述放大电路具有可变截止频率; 提供增益控制信号的控制单元(80) 以及暂时关闭高频信号的截止单元(30)。 在将高通滤波器的截止频率从高值切换到低值之前,控制单元(80)使用截止控制信号来控制切断单元(30)开始高频信号的切断。

    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

    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。

    PROCESSING AN INFORMATION CARRYING SIGNAL FOR AUTOMATIC GAIN CONRTOL
    18.
    发明申请
    PROCESSING AN INFORMATION CARRYING SIGNAL FOR AUTOMATIC GAIN CONRTOL 审中-公开
    处理信息自动增益信号的信号

    公开(公告)号:WO2006132908A1

    公开(公告)日:2006-12-14

    申请号:PCT/US2006/021247

    申请日:2006-06-01

    Inventor: HADDAD, Bassel

    CPC classification number: H03G3/001 H03G3/3052 H03G2201/202

    Abstract: An automatic gain control (AGC) controls the signal amplitude at the input to an analog to digital converter (ADC) input by applying a gain that produces a desired overall amplitude resolution of the patterns actually presented by the signal delivered by the ADC converter. Short RLL patterns will have sufficient resolution for reliable extraction as a result of having sufficient overall amplitude, which thereby strengthens the ability of the read channel to correctly extract data. Moreover, the system determines correct AGC settings responsive to measurements of user data parameters. The system 0 also detects and corrects for DC offsets in the signal whose gain is controlled.

    Abstract translation: 自动增益控制(AGC)通过施加增益来控制模数转换器(ADC)输入端的信号幅度,该增益产生由ADC转换器传送的信号实际呈现的模式的期望的总幅度分辨率。 由于具有足够的总体幅度,短的RLL图案将具有足够的分辨率以进行可靠的提取,从而增强读取通道正确提取数据的能力。 此外,系统根据用户数据参数的测量来确定正确的AGC设置。 系统0还检测并校正增益受控的信号中的直流偏移。

    Linear and non-linear dual mode transmitter
    19.
    发明公开
    Linear and non-linear dual mode transmitter 审中-公开
    直链和具有两种操作模式的非线性发射机

    公开(公告)号:EP1705800A3

    公开(公告)日:2010-01-06

    申请号:EP05026024.9

    申请日:2005-11-29

    Inventor: Pan, Meng-An

    Abstract: A transmitter includes a dual mode modulator and an amplifier coupled to the dual mode modulator. The dual mode modulator implements a linear modulation scheme during a first mode of the modulator to produce a variable envelope modulated signal. The dual mode modulator implements a non-linear modulation scheme during a second mode of the modulator to produce a constant envelope modulated signal. The amplifier is biased as a linear amplifier during the first mode of the modulator and is biased as a non-linear amplifier during the second mode of the modulator. A feed-forward connection between the dual mode modulator and the amplifier is used to indicate a change in modulation mode and to adjust the bias of the amplifier. A power of the constant envelope modulated signal is increased such that an operating point of the amplifier remains substantially constant during the first and second modes of the modulator.

    RADIO RECEIVER AND AUTOMATIC GAIN CONTROL METHOD
    20.
    发明公开
    RADIO RECEIVER AND AUTOMATIC GAIN CONTROL METHOD 有权
    FERKEMPFÄNGERUND VERFAHREN ZUR AUTOMATISCHENVERSTÄRKUNGSREGELUNG

    公开(公告)号:EP1650890A1

    公开(公告)日:2006-04-26

    申请号:EP03817647.5

    申请日:2003-07-25

    Abstract: A received frame is branched into a gain control system (20A) for common pilot signals and a gain control system (20B) for individual data signals. The gain control system (20A) controls the gain of the common pilot signals, and the gain control system (20B) controls the gain of the data signals. A signal processor (30) establishes synchronization of frames, outputs a gain control signal (g1) so that the gain of the common pilot signal is constant, to a gain control circuit (21a) for the common pilot signals, and outputs a gain control signal (g2) so that the gain of the data signal is constant, to a gain control circuit (21b) for the data signals. The gain is controlled to be constant, thereby preventing saturation of ADC (26a, 26b, 27a, 27b) and S/N deterioration.

    Abstract translation: 接收到的帧被分支成用于公共导频信号的增益控制系统(20A)和用于各个数据信号的增益控制系统(20B)。 增益控制系统(20A)控制公共导频信号的增益,增益控制系统(20B)控制数据信号的增益。 信号处理器(30)建立帧的同步,输出用于公共导频信号的增益控制电路(21a)的公共导频信号的增益恒定的增益控制信号(g1),并输出增益控制 信号(g2),使得数据信号的增益恒定到用于数据信号的增益控制电路(21b)。 增益被控制为恒定,从而防止ADC(26a,26b,27a,27b)的饱和和S / N恶化。

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